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Evolution of dogs and the hybrid dog theory
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Selective Breeding Selective Breeding, also known as “Artificial Selection,” is an advanced genetic class that is constructed by two categories, inbreeding and hybridization. It is a process when scientists develop particular phenotypic traits that they purposely want to be passed down to offspring. Scientists study these specific traits and spend time to calculate how heritable the traits are. The more the trait is expressed in the offspring, the more heritable they are. The more inherited allele in a gene is called dominant, while the less common allele is recessive. The study of artificial selection began in the late 1950’s when a Soviet geneticist prioritized the attempt of replicating domestication practices on silver foxes, which then, had not been domesticated yet.
Benefits Some knowledge that can be shared about the beneficial traits are that the benefits can become more and more productive with each generation in inbreeding and, if not all, most popular household dog breeds are the outcome of hybridization. Mannerisms that have been employed since early stages of domestication tactics have also affected the maternal behavior. Cross-fostering means that domestic hens are more likely to accept chicks hatched from eggs of other species of poultry. If a wild turkey chick were to be raised by a domestic
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The efficiency of dairies could increase by selectively breeding their herd. According to UC Davis researchers, reducing their carbon footprints and improving their health could be an outcome of considering foot warts and some other hoof ailments when designing their breeding plans. Selective Breeding is something people can learn, appreciate, discuss, and inspire with. If there was no Selective Breeding, the years and years of research, experiments, and money would go to waste along with a hub for the curious minds of everyone
Every year an estimated 4.5 million dog bites occur in the U.S. BSL (Breed Specific Legislation) is a law that suggests that certain breeds are more prone to aggression than others. By banning or restricting the breeds in question, it is believed to help reduce the number of attacks. BSL determines which breeds are dangerous using statistics. These statistics cannot be relied on for two reasons. One, there is no concrete method to determine a dog’s pedigree. Thus, a victim, animal control officer, or owner is trusted with identifying the dog through appearance. According to Scott and Fuller, authors of Genetics and the Social Behavior of the Dog, “It has been known for decades that the cross-bred offspring of purebred dogs of different breeds often bear little or no resemblance to either their sires or dams (1965).” Visual assessments are questionable. Two, population is not accounted for. Population is important, in that it provides context to percentages. Because a dog’s breed is impossible to pinpoint, we cannot provide numbers. BSL’s cause is rendered useless when we consider these points.
Artificial insemination offers. .many advantages to farmers and takes full benefits of the estrus synchronization techniques (Cseh et al., 2012). The small ruminant industry was changed by. .the artificial insemination since it produce better control of reproduction. .and sexually transmitted
...safe place ended in refugee camps for homosexuals. One popular safe camp for them was located in San Francisco. Carl Whittman speaks about his experience of being in an unsafe environment and moving to a camp in San Francisco to escape.
The eugenics movement was a period of time when it was believe that the genes of your father and mother gave rise to any and all traits, whether it be physical, mental, emotional, behavioral, and moral. Essentially, eugenics established that all of a persons appearance, skill, and potential was rooted in your genes.
A debate is ragging over the advancements being made in genetic engineering. Scientist discovered that genes are the map of every aspect of a living organism, this has furthermore led to the prospect of altering this coding. By modifying one’s genes parents will one day be able to pick the color of their unborn child’s eyes and farmers will have the ability to develop plants that will produce bigger and healthier harvest. With the growing anticipation that some feel towards genetically modified crops others question it effects on the surrounding environments. Often pesticides are more heavily relied on for genetically modified crops and some cases have found pollination decreased in areas dominated by GM plants. Since there are so many aspects of genetic modification that have yet to be explored, much more research is required before distributing GM seeds internationally, but from the information already available the sides have begun to divide.
Perkins, H.F.. A Decade of Progress in Eugenics: Scientific Papers of the Third International Congress of Eugenics. 1993 Baltimore: Williams & Wilkins Company.
The history of harmful eugenic practices, spurring from the Nazi implementations of discrimination towards biologically inferior people has given eugenics a negative stigma (1,Kitcher, 190). Genetic testing, as Kitcher sees it through a minimalistic perspective, should be restrained to aiding future children with extremely low qualities of life (2,Kitcher, 190). He believes that genetic engineering should only be used to avoid disease and illness serving the role of creating a healthier human race. He promotes laissez-faire eugenics, a “hands off” concept that corresponds to three components of eugenic practice, discrimination, coercion and division of traits. It holds the underlying works of genetic testing, accurate information, open access, and freedom of choice. Laissez-faire eugenics promises to enhance reproductive freedom preventing early child death due to genetic disease (3,Kitcher, 198). However there are dangers in Laissez-faire that Kitcher wants to avoid. The first is the historical tendency of population control, eugenics can go from avoiding suffering, to catering to a set of social values that will cause the practice of genetics to become prejudiced, insensitive and superficial. The second is that prenatal testing will become limited to the upper class, leaving the lower class with fewer options, creating biologically driven social barriers. Furthermore the decay of disability support systems due to prenatal testing can lead to an increased pressure to eliminate those unfit for society (4,Kitcher, 214).
In the 1920s, a company in New York started a movement known as “The Eugenics Movement.” The idea of eugenics was eventually picked up by Germany, China, Peru, India and Bangladesh. The movement is still in effect till this day; however, it is not as prevalent as it once was.
Charles Darwin’s theory of natural selection is viewed by many as one of the most significant and influential ideas ever conceived. However it took Darwin 20 years to publish his book ‘the origin of species’, one of the primary reasons for this was that he feared the implications his theory would have on the world. Although the theory of evolution greatly enhanced and progressed science as well as deepen human understanding of nature, it came at a cost. The theory led to the development of Social Darwinism, which further created a variety of different sociological and political ideologies. One of the most prominent of these was the idea of eugenics, which emphasized improving the genetic quality of a race through artificial selection. The eugenics
This process is seen mostly in agriculture. It is because of artificial selection that we have the domesticated plants and livestock that we eat. In the case of canines, they were originally bred to become working and hunting dogs in agriculture. Later on they were bred as companion animals. The different variations of domesticated dog will be discussed later. The down fall of artificial selection is that it decreases variation in a species. Pure bred dog are highly susceptible to many different disorders and disease because of the lack of variation in their genotype. With these two processes, today we have friendly canine
Introduction The end of the Civil War allowed the soldiers to lay down their weapons, but from the ashes of the battle rose politicians wielding theirs Industrial Growth Causes Problems Rapid growth of industry caused cities to expand Depressions and bankruptcy fueled labor unrest Influx of immigrants complicated matters C. Social Darwinism The idea of “Survival of the Fittest” Tried to explain away social and economic inequalities The rich were reproducing less, thought they were losing control The working class was organizing against the rich Original solutions for solving the poors’problems wasn’t working Eugenics was created as a solution D.
Selective breeding A breed is a particular set of domestic animals or plants having uniform look and behavior, that differentiate it from other animals or plants. Domestication is the process whereby a population of living organisms is changed at the genetic level, through generations of selective breeding, to accentuate traits that ultimately benefit humans. The deliberate breeding of animals and other species to obtain required features by human beings is called selective breeding. It includes breeding methods such as inbreeding, line breeding, etc. The animals that are produced are tamed, and the breeding is usually done by an expert breeder.
Oak, Manali. “Pros and Cons of Genetic Engineering.” Buzzle. N.p., 22 Aug. 2008. Web. 28 Sept. 2009. .
Specific Purpose: To bring attention to the issue of dog breed discrimination through Breed Selective Legislation (BSL) and inform the audience how they can change it.
The study of eugenics has been around for many years. China runs the largest and most successful eugenics program in the world. This is becoming more common and accepted by many people. However, simply because it is accepted does not make it right. Eugenics comes from the Greek word meaning “good” or “well born”. It is the belief that some people are genetically superior to others; and that one inherits their relatives’ mental and psychological traits. Eugenics started off as a positive theory, encouraging educated people (positive eugenics) to bear more children and raise them in a constructive manner, but has become a negative theory threatening the sterilization of people with unwanted traits (negative eugenics).