Leading Early Childhood Essay Example | Topics and Well Written Essays - 1000 words

Leading Early Childhood - Essay Example According to (Aubrey, 2011), leaders perceive their responsibility as spanning from their own to their staff’s development. In the past, the role of leaders in staff development, and especially in early childhood did not have much emphasis. However, in the recent past, this has taken center stage. Aubrey (2011) views this as having been necessitated by changing expectations. Leadership role is all about ‘quality of staff training’ (Aubrey, 2011, p. 45). According to Aubrey (2011), countless hindrances have derailed this, ranging from policies and procedures, as well as inspections. In the changing world of today, Aubrey (2011) explains that leaders and staff hold clarified views concerning decision making. In this regard, however, it emerges that all participants in this field including the child ‘become involved to some extent in the decision making’ (p. 34). However, she forwards interesting evidence on how people with varying initial qualification and approaching this sector from varied routes, may hold differing opinions on early childhood leadership as well as diverse attitudes on aspects of their roles. This serves to demonstrate the degree to which staff development is essential, since, looking at pedagogical leadership; the teacher emerges as a crucial decision maker. Effective leadership has been impacts greatly on a child’s learning. Leadership is also central to the overall success of a school. In this light, therefore, the quality of this leadership should be cultivated and improved. In the Early Childhood setup, leadership is perceived to flow from top downwards. However, some contributors in this field will argue that leadership is more followers oriented, especially in regard to children; than leader oriented. This is a credible hypothesis according to Berthelsen, Brownlee, & Johansson, (2009), who view children as being the consumers in the training process. The findings produced by Aubrey (2011) sets several leadership

Congenital Erythropoietic Porphyria Research Paper

Congenital Erythropoietic Porphyria - Research Paper Example CEP, or congenital erythropoietic porphyria is an autosomal recessive trait, which causes the patient to have an enlarged spleen and liver, reddish urine, bones and teeth as well as lesions on the skin that react to UV light due to the excess porphyrin deposits (Bishop et al., 2010, p. 1062). However, another disease, AIP or acute intermittent porphyria could pose as CEP due to some similarities in patient symptoms. Initially, patients that were affected were suspected to have CEP since there were the usual symptoms such as the reddish discoloration of teeth as well as the urine, and pink fluorescence of bones under UV light due to deposition of porphyrin and other precursors (Clavero et al., 2009, p. 585). However, if molecular and tissue analyses would be employed, CEP and AIP can be differentiated from each other, with CEP being an autosomal recessive disease and AIP a dominant one. This paper would be about some studies on congenital erythropoietic porphyria (CEP), as well as som e descriptions of the disease at the genetic level. The first main topic is about the molecular aspect of CEP as a disease. The most common form of mutation of the UROS gene located at locus 10q25.3-26.3 is the C37R mutation, which is fairly common. Other mutations such as non-sense mutations, splicing in certain cites, deletions and insertions as well as other complex rearrangement of sequences at chromosomal locus 10q25.3-26.3 occur and create the CEP phenotype (Bishop et al., 2010, p.1068). In a study on the expression of CEP model expressions in mice, Bishop et al. (2011, p. 751) were able to quantify the approximated enzymatic activities of the UROS enzyme in livers of normal mice and CEP-affected mice. It is hypothesized that since mice are animals with shorter lifespan and thus have several generations in a short period of time, the causative mechanisms of the defective UROS gene would be easier to identify. Also, since the disease would be following the Mendelian Pattern, be arers of the homozygous recessive genotype would show disease symptoms while heterozygous and homozygous dominant would be fairly normal. Meanwhile, in a study about CEP in cats, a publication regarding the discovery of a feline model for CEP was released (Clavero et al., 2010, p. 382). Compared to a previous study, which had cats with AIP instead of CEP, the new proband for this study had PBG and ALA levels which are in normal detectable amounts, with elevated URO I and COPRO levels as well as abnormal UROS activity, much like in human and mice CEP counterparts. Via amplification of the suspected mutated sequences, aside from a shorter polypeptide (one cystein shorter), feline UROS sequence was fairly similar to the previously reported human and mouse. The double-mutant had reduced enzymatic activity, caused by two amino acid substitutions, making the protein product unable to fold in a stable manner, thereby causing reduced activity of the mutated enzyme, as compared to either sin gle mutant or normal enzymes (Clavero et al., 2010, p. 387). Three genotypes were produced after mating several strains and generations of mice: homozygous recessive mice having the CEP gene had a genotype of C37R/C37R, a heterozygote C37R/V99L expresses a milder form of the disease, and a homozygous dominant genotype V99L/V99L exhibits the normal phenotype. Blood sampling for analyses of presence of porphyrin and other precursors were done, as well as histology of the liver and the spleen

The Power of Peer Pressure :: Peer Pressure Essays

Introduction Why is Peer pressure so great to people especially to teenagers? Why do young people smoke cigarettes, drink alcohol or even use drugs? People enjoy being in a group of people who sees eye to eye about things, Whether it is kind of clothing to wear, the kind of food to eat, that way our own opinions whether they are wise or foolish appears to be valid for the people around you. It creates an environment of social acceptance. It is a wonderful research topic to study because it has significance to teenagers like me. I want to know what influence us and how to avoid them. Negative influence can change our lifestyle. Peer pressure is responsible for sudden social change that influences some people to do thing they’ve never done before in positive or negative way. Teenagers experience peer pressure every day from their friends, their classmates, their coworkers, and many others. While positive influence is something to be encouraged, negative peer pressure can cause many problems in your daughter or son’s life parents, friends and other peer group can help you teens resist negative peer pressure by talking the time to talk with them about it and helping them develop the tools and skills needed. Peer pressure leads to some disturbing negative behavior in some teenagers. Almost half of teenagers were feeling pressured by their friend about sexual activity. In a survey conducted by Survelum Public Data Bank, students feel pressured by their friends between 35 and 49 percent of the time. Psychiatrist attribute the power of peer influence to a group particularly if the group has social status within that area. Peer Pressure can be positive. For example, wanting to join an athletic group of friends may compel and be forced otherwise sedentary student to try out for soccer team. In Survelum Public Data Bank survey on peer pressure, 51% of teenagers felt that peer pressure or the influence was sometimes positive. The Advantages Peer Study Group Children are influenced by their group, just as adults are. It can help children do better in school. A study group is a functional group composed of two or more students. The study group atmosphere offers the students the opportunity to learn more broad discussions, sharing their opinions and knowledge about a certain topic or in a course. It also helps them avoid procrastination. Many students tend to cram for test/exams on the night before or begin projects with very limited time. When in study group scheduled days can avoid participants to procrastination. Students tend to learn efficiently within a group versus

“Crazy Homeless Man” Essay

â€Å"Crazy Homeless Man† It was sophomore year of high school and after a long day of taking tests and writing essays it was finally time to go home. My cousin and I waited for and then got into our regular train.As we got in, we saw nothing out of the ordinary; you had your regular business man with too much product in his perfectly combed hair, that seemed as though he had spent hours on it, reading his newspaper while tapping his overpriced shoes on the floor, screaming little kids jumping up and down and swinging from the poles while their negligent nannies, totally oblivious of the whole scene, sit quietly reading their new editions of Harry Potter, and finally the homeless guy on the corner seat wrapped up in old newspapers and a dirty fleece, probably found while searching through some garbage, trying to get a good nap in before he has to switch trains. â€Å"Nothing different about this train ride,† we thought to ourselves as the train left the station. Shortly after we took our seats, the homeless man awoke, stood up, and started walking around looking at people and sniffing the train. Everyone looked away as though to look busy, just in case the man tried to shout out his life story and then beg for money.Instead he took an old sock out of his pocket that looked worn out, and started to clean the train doors with it. He said, â€Å"Child, this train is dirty! † He moved around the train trying not to fall or lose his balance as he swept the floor with the old sock. He then took out an air deodorizer and started spraying it on the train walls. My cousin and I tried so hard not to laugh. We looked away so that we weren’t tempted. Our giggles and smiles soon changed into surprised, scared, frozen expressions as the man took out a lighter and said, â€Å"I can’t take this dirty train anymore. † I knew because of my immature eighth grade friends that when someone had an aerosol†¦

Perception Of Self, Discrimination, And Failure Essay

Individual identity is constructed by many things, ranging from perceptions from others to perception of self, and is constantly changing as life’s complexities increase. Fear, or the distressing feeling of anxiety and angst, is also an unlikely but extremely important component of composition of identity as one gets older, for it is fear that shapes identification and interaction, especially in a group setting. A case where this is apparent is within Predominantly White Institutions, or PWIs, and the interactions between dominant and minority, namely Black, students. In a social setting where stereotypes and discrimination exists due to a variety of existing cultures and lifestyles, it is fear that forms social groups, guides interactions, and presents identities to students. With a multitude of fears, including exclusion, discrimination, and failure, identity plays a key role in deciding the associations between students and how those associations will play a role in the aca demic and social successes of those fearful students. All in all, it is fear that largely shapes the identity of those who are fearful; from internal views of self to external views of the environment to how others view people who are not them. Social interactions and sense of identity are affected because fear guides public performances and causes the embracement of an identity while simultaneously rejecting another. Fear leads individuals to emphasize differences that allows them to identify with aShow MoreRelatedEssay about The Effects of Negative Weight Perception807 Words   |  4 Pagesa state of mind. Allow us to explain.,† that having a low self-image is exceedingly damaging to oneself. It not only leads to weight gain but can also cause health problems. Others perceptions can also have a negative effect on an individual’s well being. Perception can have a profound impact on a person’s overall state of being. Miller (2014) explains that degrading oneself â€Å"can actually alter your physical appearance† (p. 62). Perception often negatively affects people who are of average or normalRead MoreConversations about Disability Essay1367 Words   |  6 Pages1970, 323) Secondly, we will have a look at the socio- political definition of disability. Both medical and economic concepts are being challenged by a new socio-political definition of disability .This model implies that disability stems from the failure of a structured social environment to adjust to the needs and aspirations of disabled citizens rather than from the inability of a disabled individual to adapt to the demands of society .The devaluation of a disabled person has not resulted from lackRead MoreBeing Part Of A Stigmatized Group1287 Words   |  6 PagesBeing part of a stigmatized group often accompanies a sense of negative self-worth. This association can become increasingly evident if an individual is constantly faced with adversities that make the individual feel devalued. Specifically, individuals in the LGBTQIA (Lesbian, Gay, Bisexual, Transgender, Queer, Intersex, Asexual) population have unique experiences that proliferate the rate of being marginalized. 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Paragraph 1 – research on discrimination – why does it occur †¢ Richards (1997) – Most racist beliefs derive from the idea that there is a biological hierarchy between different social groups based on perceived racial differences. This belief that there is a natural order reflected inRead MoreInvisible Man1629 Words   |  7 Pagesblindness lead to losing an individual identity. For example, the identity of the individual is hard to determine because of the numerous roles he plays in the novel. The society can also define an identity of an individual but the skewed and biased perception of the narrator means that they premise their arguments on subjective analysis. For example, the Brotherhood thinks that the narrator is opportunistic while the worker at the paint factory thinks that the narrator overshadows him. All these activitiesRead MoreIs Sports A Good Thing? Essay1148 Words   |  5 Pagesseen as a good thing, this essay aims to address the discrimination that goes on within this social environment in regards to athletes w ho are part of the LGBTQ community. Whether a man or woman, being openly part of the LGBTQ community as an athlete is difficult because there is so much at stake as a result of society’s heteronormative way of thinking. Kristen Schilt from the University of Chicago argues that, â€Å"Responses to perceived failures to fulfill gender criteria †¦accomplish the policingRead MoreThe Good, the Bad, and the Oh My915 Words   |  4 Pagesprosperity and liberty, also known as the Great Society. The Great Society has always been a topic of controversy on the basis of whether or not it was a success or failure, or perhaps both. After reading and analyzing a variety of documents, the conclusion can be made that the Great Society had indeed been a success, but it as well was a failure. Lyndon Johnson, like other politicians, had many aspirations and was determined to climb the political scale. After the assassination of John F. Kennedy, JohnsonRead MoreEmployee Engagement Of Long Term Unemployed1216 Words   |  5 Pagesprevious research on examining employee engagement of Long-Term Unemployed (LTU) and the engagement issues surrounding the unemployed and employment services. In expanding on previous work, this paper will explore how the issues of social relations, perceptions and engagement affect the interactions between employers, the unemployed and employment services agencies. The paper will draw on research literature and the Kangaroo Island Workskil office as a case study on how these issues are being worked onRead MoreThe Relation Of Specific Psychopathology With Social Perception1298 Words   |  6 Pageswith social perception. Autism spectrum disorder, schizotypy and psychopathy will be further inspected and researched through a transdiagnostic approach – treating these disorders as impairments of the underlying cognitive system instead of as a difference in entity. Gray et al (2010), tries to define the aforementioned disorders with both an agency (cognitive abilities and control) and an experience (primitive or animalistic behaviours) score which are underlying aspects of mind perception. Mind perception

The History of How Cows Were Domesticated

According to archaeological and genetic evidence, wild cattle or aurochs (Bos primigenius) were likely domesticated independently at least twice and perhaps three times. A distantly related Bos species, the yak (Bos grunniens grunniens or Poephagus grunniens) was domesticated from its still-living wild form, B. grunniens or B. grunniens mutus. As domesticated animals go, cattle are among the earliest, perhaps because of the multitude of useful products they provide humans: food products such as milk, blood, fat, and meat; secondary products such as clothing and tools manufactured from hair, hides, horns, hooves and bones; dung for fuel; as well as load-bearers and for pulling plows. Culturally, cattle are banked resources, which can provide bride-wealth and trade as well as rituals such as feasting and sacrifices. Aurochs were significant enough to Upper Paleolithic hunters in Europe to be included in cave paintings such as those of Lascaux. Aurochs were one of the largest herbivores in Europe, with the largest bulls reaching shoulder heights of between 160-180 centimeters (5.2-6 feet), with massive frontal horns of up to 80 cm (31 inches) in length. Wild yaks have black upward- and backward-curving horns and long shaggy black to brown coats. The adult males can be 2 m (6.5 ft) high, over 3 m (10 ft) long and can weigh between 600-1200 kilograms (1300-2600 pounds); females weigh only 300 kg (650 pounds) on average. Domestication Evidence Archaeologists and biologists are agreed that there is strong evidence for two distinct domestication events from aurochs: B. taurus in the near east about 10,500 years ago, and B. indicus in the Indus valley of the Indian subcontinent  about 7,000 years ago. There may have been a third auroch domesticate in Africa (tentatively called  B. africanus), about 8,500 years ago. Yaks were domesticated in central Asia about 7,000-10,000 years ago. Recent mitochondrial DNA (mtDNA) studies also indicate that B. taurus was introduced into Europe and Africa where they interbred with local wild animals (aurochs). Whether these occurrences should be considered as separate domestication events is somewhat under debate. Recent genomic studies (Decker et al. 2014) of 134 modern breeds supports the presence of the three domestication events, but also found evidence for later migration waves of animals to and from the three main loci of domestication. Modern cattle are significantly different today from the earliest domesticated versions. Three Auroch Domesticates Bos taurus The taurine (humpless cattle, B. taurus) was most likely domesticated somewhere in the Fertile Crescent about 10,500 years ago. The earliest substantive evidence for cattle domestication anywhere in the world is the Pre-Pottery Neolithic cultures in the Taurus Mountains. One strong strand of evidence of the locus of domestication for any animal or plant is genetic diversity: places that developed a plant or animal generally have high diversity in those species; places where the domesticates were brought in, have lesser diversity. The highest diversity of genetics in cattle is in the Taurus Mountains. A gradual decline in overall body size of aurochs, a characteristic of domestication, is seen at several sites in southeastern Turkey, beginning as early as the late 9th at Cayonu Tepesi. Small-bodied cattle do not appear in archaeological assemblages in the eastern Fertile Crescent until relatively late (6th millennium BC), and then abruptly. Based on that, Arbuckle et al. (2016) surmise that domestic cattle arose in the upper reaches of the Euphrates river. Taurine cattle were traded across the planet, first into Neolithic Europe about 6400 BC; and they appear in archaeological sites as far away as northeastern Asia (China, Mongolia, Korea) by about 5000 years ago. Bos indicus (or B. taurus indicus) Recent mtDNA evidence for domesticated zebu (humped cattle, B. indicus) suggests that two major lineages of B. indicus are currently present in modern animals. One (called I1) predominates in southeast Asia and southern China and is likely to have been domesticated in the Indus Valley region of what is today Pakistan. Evidence of the transition of wild to domestic B. indicus is in evidence in Harappan sites such as Mehrgahr about 7,000 years ago. The second strain, I2, may have been captured in East Asia, but apparently was also domesticated in the Indian subcontinent, based on the presence of a broad range of diverse genetic elements. The evidence for this strain is not entirely conclusive as of yet. Possible: Bos africanus or Bos taurus Scholars are divided about the likelihood of a third domestication event having occurred in Africa. The earliest domesticated cattle in Africa have been found at Capeletti, Algeria, about 6500 BP, but Bos remains are found at African sites in what is now Egypt, such as Nabta Playa and Bir Kiseiba, as long ago as 9,000 years, and they may be domesticated. Early cattle remains have also been found at Wadi el-Arab (8500-6000 BC) and El Barga (6000-5500 BC). One significant difference for taurine cattle in Africa is a genetic tolerance to trypanosomosis, the disease spread by the tsetse fly which causes anemia and parasitemia in cattle, but the exact genetic marker for that trait has not been identified to date. A recent study (Stock and Gifford-Gonzalez 2013) found that although genetic evidence for African domesticated cattle is not as comprehensive or detailed as that for  other forms of cattle, what there is available suggests that domestic cattle in Africa are the result of wild aurochs having been introduced into local domestic B. taurus populations. A genomic study published in 2014 (Decker et al.) indicates that while considerable introgression and breeding practices have altered the population structure of modern day cattle, there is still consistent evidence for three major groups of domestic cattle. Lactase Persistence One recent strain of evidence for the domestication of cattle comes from the study of lactase persistence, the ability to digest milk sugar lactose in adults (the opposite of lactose intolerance). Most mammals, including humans, can tolerate milk as infants, but after weaning, they lose that ability. Only about 35% of people in the world are able to digest milk sugars as adults without discomfort, a trait called lactase persistence. This is a genetic trait, and it is theorized that it would have selected for in human populations that had ready access to fresh milk. Early Neolithic populations who domesticated sheep, goats and cattle would not have yet developed this trait, and probably processed the milk into cheese, yogurt, and butter prior to consuming it. Lactase persistence has been connected most directly with the spread of dairying practices associated with cattle, sheep, and goats into Europe by Linearbandkeramik populations beginning about 5000 BC. And a Yak (Bos grunniens grunniens or Poephagus grunniens) The domestication of yaks may well have made human colonization of the high Tibetan Plateau (also known as Qinghai-Tibetan Plateau) possible. Yaks are extremely well adapted to the arid steppes at high elevations, where low oxygen, high solar radiation, and extreme cold are common. In addition to the milk, meat, blood, fat, and pack energy benefits, perhaps the most important yak byproduct in the cool, arid climate is dung. The availability of yak dung as a fuel was a critical factor in allowing for the colonization of the high region, where other fuel sources are lacking. Yaks possess large lungs and hearts, expansive sinuses, long hair, thick soft fur (very useful for cold-weather clothing), and few sweat glands. Their blood contains a high hemoglobin concentration and red blood cell count, all of which make cold adaptations possible. Domestic Yaks The main difference between wild and domestic yaks is their size. Domestic yaks are smaller than their wild relatives: adults are generally no more than 1.5 m (5 ft) tall, with males weighing between 300-500 kg (600-1100 lbs), and females between 200-300 kg (440-600 lbs). They have white or piebald coats and lack gray-white muzzle hairs. They can and do interbreed with wild yaks, and all yaks have the high altitude physiology they are prized for. There are three types of domestic yaks in China, based on morphology, physiology, and geographical distribution: a valley type distributed in the valleys of north and east Tibet, and some parts of Sichuan and Yunnan provinces;a plateau grassland type mainly found in the high, cold pastures and steppes that maintain an annual average temperature below 2 degrees centigrade;and white yaks found in almost every region in China. Domesticating the Yak Historical reports dated to the Chinese Han Dynasty state that yaks were domesticated by the Qiang people during the Longshan culture period in China, about 5,000 years ago. The Qiang were ethnic groups who inhabited the Tibetan Plateau borderlands including Qinghai Lake. Han Dynasty records also say the Qiang people had a Yak State during the Han dynasty, 221 BC-220 AD, based on a highly successful trade network. Trade routes involving domestic yak were recorded beginning in the Qin dynasty records (221-207 BC)--predating and no doubt part of precursors to the Silk Road--and cross-breeding experiments with Chinese yellow cattle to create the hybrid dzo are described there as well. Genetic (mtDNA) studies support the Han Dynasty records that yaks were domesticated on the Qinghai-Tibetan Plateau, although the genetic data does not allow definitive conclusions to be drawn about the number of domestication events. The variety and distribution of mtDNA are not clear, and it is possible that multiple domestication events from the same gene pool, or interbreeding between wild and domesticated animals occurred. However, the mtDNA and archaeological results also blur the dating of the domestication. The earliest evidence for domesticated yak is from the Qugong site, ca. 3750-3100 calendar years ago (cal BP); and the Dalitaliha site, ca 3,000 cal BP near Qinghai Lake. Qugong has a large number of yak bones with an overall small stature; Dalitaliha has a clay figurine thought to represent a yak, the remnants of a wood-fenced corral, and fragments of hubs from spoked wheels. The mtDNA evidence suggests domestication took place as early as 10,000 years BP, and Guo et al. argue that the Qinghai lake Upper Paleolithic colonizers domesticated the yak. The most conservative conclusion to draw from this is that yaks were first domesticated in northern Tibet, probably the Qinghai Lake region, and were derived from wild yak for the production of wool, milk, meat and manual labor, at least 5000 cal bp. How Many Are There? Wild yaks were widespread and abundant in the Tibetan Plateau up until the late 20th century when hunters decimated their numbers. They are now considered highly endangered with an estimated population of ~15,000. They are protected by law but still illegally hunted. Domestic yaks, on the other hand, are abundant, an estimated 14-15 million in central highland Asia. The current distribution of yaks is from the southern slopes of the Himalayas to the Altai and Hangai Mountains of Mongolia and Russia. Approximately 14 million yaks live in China, representing about 95% of the worlds population; the remaining five percent are in Mongolia, Russia, Nepal, India, Bhutan, Sikkim and Pakistan. Sources à lvarez I, Pà ©rez-Pardal L, Traorà © A, Fernà ¡ndez I, and Goyache F. 2016. Lack of specific alleles for the bovine chemokine (C-X-C) receptor type 4 (CXCR4) gene in West African cattle questions its role as a candidate for trypanotolerance. Infection, Genetics and Evolution 42:30-33. Arbuckle BS, Price MD, Hongo H, and Ãâ€"ksà ¼z B. 2016. Documenting the initial appearance of domestic cattle in the Eastern Fertile Crescent (northern Iraq and western Iran). Journal of Archaeological Science 72:1-9. Cai D, Sun Y, Tang Z, Hu S, Li W, Zhao X, Xiang H, and Zhou H. 2014. The origins of Chinese domestic cattle as revealed by ancient DNA analysis. Journal of Archaeological Science 41:423-434. Colominas, Là ­dia. The impact of the Roman Empire on animal husbandry practices: study of the changes in cattle morphology in the north-east of the Iberian Peninsula through osteometric and ancient DNA analyses.  Archaeological and Anthropological Sciences, Angela Schlumbaum, Maria Saà ±a, Volume 6, Issue 1, SpringerLink, March 2014. Ding XZ, Liang CN, Guo X, Wu XY, Wang HB, Johnson KA, and Yan P. 2014. Physiological insight into the high-altitude adaptations in domesticated yaks (Bos grunniens) along the Qinghai-Tibetan Plateau altitudinal gradient. Livestock Science 162(0):233-239. doi: 10.1016/j.livsci.2014.01.012 Leonardi M, Gerbault P, Thomas MG, and Burger J. 2012. The evolution of lactase persistence in Europe. A synthesis of archaeological and genetic evidence. International Dairy Journal 22(2):88-97. Gron KJ, Montgomery J, Nielsen PO, Nowell GM, Peterkin JL, Sà ¸rensen L, and Rowley-Conwy P. 2016. Strontium isotope evidence of early Funnel Beaker Culture movement of cattle. Journal of Archaeological Science: Reports 6:248-251. Gron KJ, and Rowley-Conwy P. 2017. Herbivore diets and the anthropogenic environment of early farming in southern Scandinavia. The Holocene 27(1):98-109. Insoll T, Clack T, and Rege O. 2015. Mursi ox modification in the Lower Omo Valley and the interpretation of cattle rock art in Ethiopia. Antiquity 89(343):91-105. MacHugh DE, Larson G, and Orlando L. 2017. Taming the Past: Ancient DNA and the Study of Animal Domestication. Annual Review of Animal Biosciences 5(1):329-351. Orlando L. 2015. The first aurochs genome reveals the breeding history of British and European cattle. Genome Biology 16(1):1-3. Orton J, Mitchell P, Klein R, Steele T, and Horsburgh KA. 2013. An early date for cattle from Namaqualand, South Africa: implications for the origins of herding in southern Africa. Antiquity 87(335):108-120. Park SDE, Magee DA, McGettigan PA, Teasdale MD, Edwards CJ, Lohan AJ, Murphy A, Braud M, Donoghue MT, Liu Y et al. 2015. Genome sequencing of the extinct Eurasian wild aurochs, Bos primigenius, illuminates the phylogeography and evolution of cattle. Genome Biology 16(1):1-15. Qanbari S, Pausch H, Jansen S, Somel M, Strom TM, Fries R, Nielsen R, and Simianer H. 2014. Classic Selective Sweeps Revealed by Massive Sequencing in Cattle. PLoS Genetics 10(2):e1004148. Qiu, Qiang. Yak whole-genome resequencing reveals domestication signatures and prehistoric population expansions. Nature Communications, Lizhong Wang, Kun Wang, et al., Volume 6, Article number: 10283, Decemeber 22, 2015. Scheu A, Powell A, Bollongino R, Vigne J-D, Tresset A, Çakirlar C, Benecke N, and Burger J. 2015. The genetic prehistory of domesticated cattle from their origin to the spread across Europe. BMC Genetics 16(1):1-11. Shi Q, Guo Y, Engelhardt SC, Weladji RB, Zhou Y, Long M, and Meng X. 2016. Endangered wild yak (Bos grunniens) in the Tibetan plateau and adjacent regions: Population size, distribution, conservation perspectives and its relation to the domestic subspecies. Journal for Nature Conservation 32:35-43. Stock, Frauke. Genetics and African Cattle Domestication. African Archaeological Review, Diane Gifford-Gonzalez, Volume 30, Issue 1, SpingerLink, March 2013. Teasdale MD, and Bradley DG. 2012. The Origins of Cattle. Bovine Genomics: Wiley-Blackwell. p 1-10. Upadhyay, MR. Genetic origin, admixture and population history of aurochs (Bos primigenius) and primitive European cattle. Heredity, W Chen, J A Lenstra, et al., Volume 118, Nature, September 28, 2016. Wang K, Hu Q, Ma H, Wang L, Yang Y, Luo W, and Qiu Q. 2014.  Genome-wide variation within and between wild and domestic yak. Molecular Ecology Resources 14(4):794-801. Zhang X, Wang K, Wang L, Yang Y, Ni Z, Xie X, Shao X, Han J, Wan D, and Qiu Q. 2016. Genome-wide patterns of copy number variation in the Chinese yak genome. BMC Genomics 17(1):379.

Steroids And Athletes Should Not Be Allowed - 1234 Words

Steroids and Athletes What is the best way to get big quick? Most would say to go to the gym or start a more intense workout program and eat right. It is contrary for some professional athletes that go against the correct way to maximize their strength and take steroids. Most your sport competitors participate in sports to have the opportunity to put their abilities against those of their peers. Many athletes are determined to win at all cost. They may use that determination to justify the use of steroids. Steroids are bad, there are many unfair advantages of athletes that use steroids to make gain in a game they love to play, athletes using steroids are not being good role models to the younger generation that looks up to them. , and many athletes have health risk from using steroids. Athletes that are in sports should not be allowed to consume steroids. Or if they are consuming steroids they should not be allowed to play sports. There are many unfair advantages of athletes that use steroids to make gain in a game they love to play. First, the use of steroids is cheating and it violates the rules and contracts athletes have agreed to. A player uses steroids to enhance his or her performance is illegal, so when a player uses them they are cheating. For example; Cheating is monitored today in sports by the use of referees or umpires. Referees and umpires cannot enforce steroid use because they have no way of telling if a player is on steroids or not they cannot beShow MoreRelatedSteriods in Sports Essay1259 Words   |  6 PagesThat athlete could improve his or her already superb skills into something even greater. This can be possible with the help of steroids. There is a current debate of allowing steroids to be legal in sports. Steroids should not be allowed in sports. Some people ask why. This research paper will give those people just a few of the many reasons why it should not be allowed. Through examining dangers of steroid abuse, ethics in sports, and characteristics of individuals who take and use steroids, it isRead MoreThe Drawbacks Of Anabolic Steroids1384 Words   |  6 PagesThe Drawbacks of Anabolic Steroids and Why They Should Stay Illegal Anabolic steroids have been used and taken by humans for over half a century. The effects they provide have developed large ongoing debates as to whether these substances should be allowed to the general public. Anabolic steroid in short provide the human body a much grander potential to build muscle by helping the cells within the body produce more muscle fibers at an astonishing rate that could never be achieved naturally. ManyRead MorePerformance Enhancement Drugs For American Sports1493 Words   |  6 Pagesperformance enhancement drugs are hurtful. The real issue of performance drugs is medical need versus physical want. Moreover, performance-enhancement drugs should still be allowed but with restrictions. 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