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The effect of genes on human development
Genes and traits
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Selective breeding is the process in which humans have been manipulating genetic transfer of organisms with desirable traits in an attempt to breed an offspring with similar desirable characteristics or with improved traits. Selective breeding involves selecting and breeding certain organisms based on their phenotypic traits so that the desired traits are passed on to the next generations and the alleles from them increase in frequency in the gene pool. The males and females that have the same desirable traits are bred together; the offspring with the desirable traits are bred together which is known as in breeding and test crossing in order to produce pure breeders, as they have the homozygous genotypes. In doing so a new breed is produced, consisting of organisms that have identifiable characteristics, making them genetically and phenotypically different from the original parent population. The test cross is more specifically used in order to determine homozygous from heterozygous which are non-pure breeders. Selective breeding is one form of biotechnology important in agriculture and medicine, because when scientists use the genetic makeup of an organism, they combine it with biotechnology so that the process much more specific and doesn’t waste time and the lives of those organisms.
Selective breeding is carried out by both commercial and hobby breeders. Breeding must be carried out within the same species, if it is carried out with two different species then they can’t breed together. Animals that are bred are known as breeds, whereas plants which are bred are known as varieties or cultivars. The outcome of cross breeding animals and crossbreeding plants are called hybrids. There are two types of selective breeding which i...
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...l cloning has been happening for many years. Many problems, such as finding cures for diseases, having less desirable qualities of livestock, scarcity of food like meat, dairy and milk, and shortage of human or animal organ donors, can worsen as the world becomes more populated and faults are discovered every day. It will help in our quality of life and allow us to live longer lives. It will help get rid of birth defects in babies because we will understand genetics better with cloning. With animal cloning, we can clone animals for food to end world hunger. Cloning has been developed as a potential technology to produce high quality plants and animals. If the clone comes from a breed that is free from certain diseases, the disease may be eliminated from the breed. Also, the best breeds and the highest quality meat and other products could be produced consistently.
In order to figure out the genes responsible, there are several other factors that must be determined. These factors include the number of genes involved, if each gene is x-linked or autosomal, if the mutant or wild-type allele for each is dominant, and if genes are linked or on different chromosomes. Proposed crosses include reciprocal crosses between the pure-breeding mutants of strains A and B with the wild-type will help determine if the genes or sex-linked or autosomal, in addition to which alleles are dominant (8). Another proposed cross includes complementation crosses between pure-breading mutants from strains A and B to determine if one or two genes are involved (8). Furthermore, testcrosses between F1 progeny and pure-breeding recessive mutants from strains A and B, which will help determine if genes are linked on the chromosome or if they assort independently (8). These proposed crosses are shown in the attached
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.
Another perk to cloning is that we could possibly alter animals to give more effective products, or more desirable products. For example a herd of sheep in Montreal have a gene in their DNA that lets them produce spider silk through their milk. It is said that bulletproof vests can be made from this silk. Just imagine the possibilities if we were able to create such animals. By using the cloning process, they can make many products that can be helpful to the environment and the people.
... of reproductive cloning is that in the future, it may be a solution to infertility, where a baby containing the genes of both parents could be artificially created, which will help the millions around the world who are unable to have children. Another benefit of cloning is that plants and animals can artificially be produced in large quantities directed at human consumption, which may, in the future help world hunger. Nutritionally superior or more “predictable” plants can also be created which will which will benefit us health-wise, and save farm costs. Lastly, the main advantage of cloning is that, through organ transplantation (therapeutic cloning), lives can be saved or prolonged, for those who have defective organs. For these 3 reasons, it’s a no brainer that scientists should continue extensive research and experiments for the better of our society as a whole.
Animal cloning could, in many ways, be beneficial to society. For instance, animals could be cloned to produce medicine. According to Ian Wilmut, cloned sheep could be used to produce a protein called alpha-1 antitrypsin that can help treat cystic fibrosis (2). Alpha-1 antitrypsin can be produced by inserting certain genes into the sheep that will be "expressed in the mammary cells," making the protein available in the sheep's milk (2). By cloning a sheep with such capabilities, scientists could have a potentially unlimited supply of this protein (2). According to one article, the animals would act as "hoofed pharmaceutical factories" (2). Scientists are also hoping to use this technique to produce human factor IX for hemophiliacs (15).
...lter the animals’ new traits so that they could resist diseases. Cloning could be performed on animals of all forms (i.e. fishes, poultry), to downsize the chance of spreading food diseases to the human race.
Genetically modified organisms are “an organism whose genome has been altered in order to favour the expression of desired physiological traits or the output of desired biological products.” http://www.merriam-webster.com/concise/genetically%20modified%20organism%20(gmo). The United States were first approved for human consumption of genetically modified foods in 1995. The techniques used for producing the genetically developed organisms include cloning recombinant DNA technology. Primary uses of genetically modified organisms are mostly in areas of agriculture and biomedical research. GMOs compromise numerous aids to society, including enlarged crop yields and the development of fresh therapeutic agents which prevent and treat a wide variety of human diseases . However there are some concerns around the use of genetically modified organisms which include the risks stood to human health and the initiation of insecticide resistant superbugs. This essay will provide evidence to support the evidence that the genetic modifications of crops produces better results than selective breeding or mutation.
Cloning is a topic with complexities that should be taken into consideration before one simply agrees or disagrees with it. There needs to be ethical codes set to ensure that the beneficial attributes of this method, such as crop propagation and cell research, can be taken advantage of, and so the unethical concepts, such as human and animal cloning for reproduction, can be banned. Imagine the improvements of life that are possible in the near future for society with a moral stance taken on this matter; the possibilities for millions are indescribable.
Plants or animals that are created through gene slicing techniques of genetic engineering are called genetically modified organisms or, GMOs. This technique for creating plants and animals was first used in the 1970s. According to Non-GMO Project, “This experimental technology merges DNA from different species, creating unstable combinations of plant, animal, bacterial and viral genes that cannot occur in nature or in traditional crossbreeding.” (Non-GMO Project). This type of genetic modification has started to worry people.
Selective breeding is just picking the individuals with a desired trait that you want to reproduce.
Cloning has come very far through science within the last few decades. Although it is a natural part of the world, scientists have taken a simple idea and expanded it further then what was thought possible. Though cloning faces many challenges, scientists such as Dr. Richard Seed continue their research in perfecting cloning in order to benefit the world. Cloning, a controversial topic thought to do harm, but simply misunderstood. The fact is, cloning could improve life more than what can be comprehended or as Dr. Richard Seed said, cloning will be taking “humanity one step closer to God.”
For example, scientists want to genetically engineer agriculturally important animals so they can pollute less, grow more rapidly, and produce higher quality meat or milk (Levine 165). They also hope to turn animals into biological factories, capable of producing medicines and other products at a lower cost than traditional manufacturing (Levine 168). Cloning can also be used to help strengthen the food supply around the world. Researchers have been able to clone disease-resistant crops and livestock. Plant cloning has created many benefits for the agricultural industry. For example, cloned plants are more predictable and the yields are more reliable. They are also able to create pesticide resistant plants which save the agricultural industry millions of dollars (Levine 166). As for human cloning, scientists want to use cloning technology to be able to understand diseases
Breeding last few years ago was never this high tech as it is today. You were not able to put genes you want into other animals who you wanted it in. Selective breeding is the process by which humans breed other animals and plants for particular traits. Mostly, different that are selectively bred are domesticated, and the breeding is normally done by a good or pro breeder. Bred animals are known as breeds, while bred plants are known as many different others as well. Selective breeding is a modern agricultural technique used to genetically create or make better and genes you want characteristics in plants and animals. With being able to put gene in, this is usually accomplish through controlled breeding of high-yield plants and animals. The advantages of selective breeding include increased work/labor and the ability to rid future offspring of disease and disability. The disadvantages include a loss of genetic variety and possible difficulties and discomfort in the animals' lives.
Lemaux, P.G. (2006). Introduction to genetic modification. Agricultural Biotechnology in California Series, 8178. Retrieved from http://ucanr.org/freepubs/docs/8178.pdf
In defense of cloning, many benefits are to be found. First and foremost, cloning can bring many medical advancements, such as cloning lost body parts or organs for surgical implants, prolonging life and health. Cloned parts have a better chance to be accepted into the host since they have the same DNA and blood type, leading to less surgical mishaps. In fact, cloning is already a big part of life today, such as GMO’s, or genetically modified crops. These are cloned seeds where they take the best and most productive foods and clone them for mass distribution. These genetically modified organisms (GMO’s) have desired traits such as height, flower color, quality, increased harvests, leading to healthier die...