Pros And Cons Of Selective Breeding

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Artificial selection – a breeder that selects desired traits for a species and then breeds that species to have those traits.

Many people are familiar with the words natural selection, an idea that was popularized by Darwin in the 19th century; to simply define it, natural selection is nature’s editing mechanism that results in the favoring of some individuals over others when exposed to certain environmental factors. Artificial selection parallels the process of natural selection but with an added twist: the involvement of human beings. Artificial selection is “a process in which humans consciously select for or against particular features in organisms” allowing “only organisms with the desired feature to reproduce or may provide more resources to the organisms with the desired feature” (Artificial Selection, n.d.).

Eugenics is a special effort targeted at cultivating the genetic composition of the human race. In history, eugenicists had promoted selective breeding to accomplish goals that were set. Nowadays, we have the proper technology that makes it possible to directly modify the genetic composition of an individual. Nevertheless, people have different views on how to best use this kind of technology. In 1883, a British scholar named Sir Francis Galton, who was also the cousin of Charles Darwin, used the term eugenics, to represent “well-born.” Galton believed that the human race could directly help its future by selectively breeding individuals who have certain “desired” qualities. This idea was constructed on Galton’s study of the upper class in Britain. After the completion of these studies, Galton established that an elite position in society was due to those persons having good genetic makeup. “Galton idea of Eugenics was developed due to Charles Darwin’s theory of Social Darwinism, which explains survival of the fittest, the capability to

Selective breeding also could cause a decrease in biodiversity due to inbreeding. Inbreeding is the production of breeding between closely related individuals [2] and is used as it increases the chance of having favourable alleles and desirable phenotypes in the offspring. However, due to the individuals close genetic relations to one another this can cause many problems for the biodiversity of the population of dairy cows. Traits that may be disadvantageous now will be continuously chosen against during genomic selection and embryo transfer as the DNA is being scanned and checked for undesirable traits. However, this disadvantageous trait may become an advantageous trait in the future but it will be lost through the generations of selective breeding against it and are difficult to get back. As a result, this affects the evolution of the species as a whole because they develop and change to suit the desirable traits chosen which results in the undesirable traits being lost altogether.

As a trained nurse in the slums and tenements of New York I had been brought face to face with conditions that made the so-called sacredness of motherhood a term of unspeakable irony. Pregnant women—drunken husbands—hungry children, children born to a heritage of disease, filth, crime—this was the order of that day. As one pregnancy followed another, a family sank deeper into the mire. And always denied contraceptive knowledge by their doctors, these women were driven to other means. On Saturday evenings, they lined up before the office of a cheap abortionist, each waiting her turn. “You would tell us nothing,” they seemed to reproach me (I knew nothing to tell them), “and here we are.” All too often wrecked health and death followed. Weighed

Eugenics, developed by an eminent scientist, Francis Galton, is the science of improving the qualities of the human species or a human population by controlling breeding to increase the occurrence of desirable heritable characteristic traits and decrease the occurrence of undesirable characteristic traits or genetical defects (Bergman, 2000.) Eugenic sterilization refers to the involuntary sterilization of certain categories of individuals without their need for consent by those subjected to the procedure (Pozgar, 2012, Pg. 411.) Individuals classified as mentally deficient, feeble-minded, epileptic, promiscuous, sexual deviants, or persons classified as habitual criminals were mainly targeted (Pozgar, 2012, Pg. 411.) Eugenicists argued degenerate traits tainted society through the reproduction of the lowest class and sterilization was to keep the "handicapped" from perpetuating themselves (Kaelber, 2014.) In addition, eugenicists also argued that "feeble-minded" individuals were believed to be financial burdens to society by overcrowding prisons, hospitals and living off welfare (Kaelber, 2014.) Sterilization was seen as a way to prevent the spending of tax dollars on the "feeble- minded" (Kaelber, 2014.) These arguments allowed Eugenics to become an acceptable practice. Advocates believed that getting rid of the "feeble-minded" and mentally deficient would decrease the undesirable characteristic traits within the human gene pool and ultimately improve the human population.

In recent years genetic modification has been advancing. Genetic modification is when a living organism has been altered to a specific state of characteristics. So far scientist has made one attempt to modify genes from an embryo recently. Whether they were successful or not is question unanswered yet. Gene modification can be great and all. However, is it right to modify genes? Apparently, the population agrees to modify genes since there has been licenses of approval for gene modification. If Society cared about gene modification, then there would be signs of disapproval of gene modification. However, this is viewed morally wrong in my point of view. The pros of modifying genes are that defeating diseases, potential to live longer, genetic diseases, and able to select character traits of babies. The cons of modifying genes are failures on the way to perfecting genetic modification, genetic modification babies can have more greater problems, very expensive, and when does it stop?

The Holocaust, where over 6 million people mostly Jewish died in concentration camps. Inside the camps, people underwent inhumane experiments in the name of scientific research. However, the Nazis discovered ways to help society and the future.

Selective breeding in animals and plants is still carried out by both commercial and hobby breeders/growers. Selective breeding allows you to be able to breed/grow the exact animal/plant you want, so they can serve the purpose you want them to. Selective breeding can be used to minimise the impacts and/or treat genetic disease.

As scientists are experimenting with many methods of gene selection, the livestock industry are relying more on genetic selection. Genetic selection allow the farmers to produce the most fertile and efficient livestock. There are many impacts of genetic selection. Genetic selection allows the farmers to genetically modify the breed of the livestock to that mass production can occur to fulfill the need of consumers. With genetic selection the quantity and quality of meat and dairy production has been increased. I was not familiar with the technique of artificial insemination for reproduction biology until I took this class. I learned that artificial insemination is also a technique of genetic selection which allows the scientist to decide what kind of livestock they want. Also, to improve in fur quality of animal, the genetic selection is in used. With genetic selection, scientist can now improve the production rate of cattle. Genetic selection can also improve the physical characteristics of the livestock. To keep up with the world’s need in beef and dairy production genetic selections have a huge impact. Nowadays, the agriculture industries have been vastly improved because of the advancement in the genetic selections. Genetic selections also allow the farmer to modify animal more for either meat or dairy production. For example, Boer goat has been genetically modified to gain

What would you do if your newborn was born with a defect? In this time era, we would love the child unconditionally. But what if you knew beforehand that you could fix this birth defect before the baby was born? Would you change the innocent newborn just because of this defect? The thought seems a little tempting to some, but to others the thought is terrifying to their moral. Why even think of changing something so beautiful and pure? With eugenics spiraling around it is possible. Eugenics is defined as the science of improving a human population by controlled breeding to increase the occurrence of desirable heritable characteristics, whether it is appearance, intelligence, or defects. Doesn’t that sound cruel? Well there are more bad qualities to eugenics than just the definition.

Eugenics is an seemingly skeptical endeavor to promote health and a homogeneous mankind, in terms of physical and mental capabilities and outlooks.While its retrospects were previously based on defective proposed theoretical beliefs, its successful breakthrough futuristically can eventually be accomplished scientifically through the mobilization of biotechnology, specifically in terms of genetic modification of the human systems. Yet, genome engineering with no doubt, impairs biological diversity.

New technological advances and scientific methods continue to change the course of nature. One of the current controversial advances in science and technology is the use of genetically modified embryos in which the study exceeds stem cell research. Scientists have begun planning for research involving human embryos in the genetic modification field. Many technological developments are responsible for improving our living standards and even saving lives, but often such accomplishments have troubling cultural and moral ramifications (Reagan, 2015). We are already beyond the days in which virtually the only procreative option was for a man and a woman to conceive the old-fashioned way (Reagan, 2015). Genetic modification of human embryos can be perceived as a positive evolution in the medical process yet it is surrounded by controversy due to ethical processes. Because this form of genetic modification could affect later born children and their offspring, the protection of human subjects should be a priority in decisions about whether to proceed with such research (Dresser, 2004). The term Human Genetic Engineering was originally made public in 1970. During this time there were several methods biologists began to devise in order to better identify or isolate clone genes for manipulation in several species or mutating them in humans.

Selective breeding removes all chances of the individual’s offspring having ADA deficiency, as through preimplantation genetic testing (IGD) an embryo without the disorder is selected. A selectively bred individual will live a longer life and experience a better quality of life as they are born without the ADA deficiency allele. This overrides natural selection, ‘the principle of survival of the fittest’, hence, the individual is likely to both live longer and have greater chances of reproduction and are more likely to pass on their alleles to the next generation. Through selective breeding individuals with favourable alleles (no disease allele) will become more common and thus the gene pool will over time contain more of these favourable