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Disadvantages of cloning animals
Cloning in animals and humans
The benefits of animal cloning
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Cloning Essay (Animals)
Introduction: Animal cloning first began around the 1900s when two German scientists successfully split a “2-cell newt embryo into two parts, successfully producing two larvae”. Over the years biotechnology has made its way into the public, and now scientists are able to clone certain animals for favourable characteristics. In this essay I will discuss 1 of the methods for animal cloning (SCNT), its implications and discussing advantages and disadvantages of animal cloning.
Definition: Animal cloning is the process whereby genetically identical individuals are produced in similar populations.
Technique (How It Is Used) (Somatic Cell Nuclear Transfer): There are various techniques involved in animal cloning, however
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A disadvantage of animal cloning is that there is a high chance of mutations occurring as in animal cloning somatic cells play an important role and when these cells contain mutations, the animal that has been cloned may be weak or could have lethal effects throughout its body later on. Another disadvantage of animal cloning is that death can occur when the donor eggs mitochondria doesn’t exactly match with the body cells (somatic) mitochondria. Furthermore, another disadvantage of animal cloning is that it is extremely expensive. This is because a large number of eggs are required for a single living clone, and this may not be worthwhile pursuing as it much easier to reproduce animals normally. Another disadvantage of animal cloning is the high failure rates. Currently, somatic cell nuclear transfer technique only has an approximate success rate of 0.1 percent-2. What this means is that out of 1000 cloning attempts, between 1-20 cloned would be successfully produced. Nevertheless there are advantages in animal cloning. Firstly, animal cloning can be used to preserve endangered species. Currently, thousands of animal species across the world are in danger of becoming extinct. However, with animal cloning, this would provide a tiny bit of hope for these certain animals surviving as the population could be highly increased in a short space of time, therefore the extinction rate would decrease and the population will increase for that specific species. However, this could very well be an advantage, but reintroducing extinct animals back to earth could lead up to one huge problem. The genes for these extinct animals are blind to us and scientists, therefore if we do reintroduce extinct animals then we could also bring back ancient viruses or bacteria that roamed the earth thousands of years
Understanding the facts as well as procedures between the many different types of cloning is very crucial. When everything boils down there are three types of cloning known as DNA cloning, therapeutic cloning and reproductive cloning. DNA cloning is the copying of a gene in order to transfer it into another organism which is usually used by farmers in most of their crops. Therapeutic cloning is the use of stem cells used to help take the place of whatever cell is missing which is potentially used to help the ill. Stem cells contain the potential to grow and help replace the genes that are missing in order to fix whatever is genetically wrong with your body or any genes that you may be missing. Reproductive cloning actually produces a living animal from only one parent. The endless possibilities and perhaps hidden motives of using genetic engineering are what divide as well as destroy the scientific community’s hope for passing laws that are towards pro cloning. Many people within soci...
Cloning, upon first hearing the word cloning, the thought of Dolly the sheep pops into the mind. The first and most used type of cloning though is not the type that creates animals, but rather DNA cloning. “Cloning is an umbrella term that science uses to indicate the duplication of biological material.”(Human Genome Project) Cloning is further broken down into three categories. The first is DNA cloning, which is the replication of DNA strands. DNA cloning is usually the process of getting a cell to replicate a desired gene for us. DNA cloning has been used since the 1970’s and has persisted as an effective cheap means of replicating DNA of interest in a foreign host cell. “To "clone a gene," a DNA fragment containing the gene of interest is isolated from chromosomal DNA using restriction enzymes and then united with a plasmid that has been cut with the same restriction enzymes.”(Human Genome Project) Plasmids are not part of the chromosome but they replicate along with the cell when it replicates and divides. Since they are not a part of the chromosome they are easier to isolate and manipulate without affecting the cells function. “When the f...
When one thinks of cloning generally the first idea that pops into your mind is a large tube filled with some creature attached to a lot of tubes. Cloning actually, is a much more complicated and difficult process. Cloning, scientifically defined is, "asexual reproduction or as the creation of genetically identical individuals" (1). In the cloning process the DNA of one individual creature is "copied" into the cell, or embryo, of another and then that embryo develops into a baby and proceeds down the process of birth and embryological development. Currently, many scientists believe that if the DNA of endangered species is rescued and preserved that the DNA of that species could undergo the cloning process and thus produce a clone of that species. The results of this cloning process would be enormous or it "will open a new front in the battle to preserve the Earth's biodiversity by cloning endangered gorillas, tigers and other rare species" (2). Cloning of endangered species would be a monumental achievement for the scientific community. Many people when they think of cloning picture sometime weird science fiction creature in a test but in real life the idea of cloning could be a valuable tool for the environmental community and it would be a process could vastly improve the current situation of endangered species.
Cloning is a real process that scientists use today to reproduce an exact living copy of DNA from the DNA of another living organism. When the idea of cloning first came about in the early 1800’s people believed it to be more science fiction than actual science. People didn’t understand the concept of cloning and therefore was naturally scared of the subject. It is best understood by how the Department of Animal Sciences at Cornell University explains it, “Cloning is a method of producing two or more genetically identical organisms by asexual reproduction. This means that there is only one parent cell, from which all the genetic information will come. Thus, the DNA sequence of cloned organisms is exactly the same as that of the parent cell.” Despite the general population’s disbelief there have been major scientific advances in the cloning process in the last fifty years. After many years of trial and error the first successful clone was created.
Cloning has been in nature for thousands of years, a clone is a living thing made from another consisting of the same DNA. For example identical twins are clones because they have the same DNA but the differ because the twins begin after conception when a zygote, a totipotent stem cell, divides into two, some plants self-pollinate and produce a seed, which in turn, makes plants with the same genetic code (Hyde). According to the Human Genome Project there are three types of cloning, DNA, therapeutic and reproductive; DNA cloning involves transferring DNA from a donor to another organism, therapeutic cloning, known as embryo cloning, involves harvesting stem cells from human embryos to grow new organs for transplant, and last is reproductive cloning which creates a copy of the host (Conger). One of the earliest cloned animals was a sea urchin by Hans Dreisch in the late 1800’s. Unlike Victor Frankenstein, Dreisch’s goal was to prove that genetic material is not lost in cell division, not to create another being, (History of Cloning) stated by Frankenstein “that I might infuse a spark of being into the lifeless thing that lay at my feet.” There are many ways an animal...
Cloning, especially human cloning attracts increasingly more attention after the first mammal cloning animal Dolly born in 1997. Cloning is divided into two categories: therapeutic cloning and reproductive cloning. Therapeutic cloning is more related to tissue level cloning to transplant healthy cells and reproductive cloning is individual level cloning. Thus, the term cloning in this essay is used to describe both individual level and tissue level cloning. Public have different views. Some people support it because of its medical value, yet some people argue that it may bring many safety risks and moral problems. Hence, decisions ought to be made to identify the extent of cloning. Therefore, this essay introduces two major benefits of human cloning on disease therapy and analysis two arguments against it on safety and ethical issues.
But on the contrary, many scientists believe that cloning can be such a positive achievement, not only for medical purposes, but for fighting extinction. For example, what if they could clone many of the endangered species that exist today? There are very few hundred of many beautiful animals that if something isn’t done to save them, they will be extinct in a few years. So if scientists could successfully clone and create these endangered species, although it would still depend on the clone maturing correctly and being able to reproduce successfully, it could be a great
The definition of a clone is an organism that has the same genetic information as
Since 1885, there have been a number of researchers, scientists, geneticists, reproductive technologists and embryologists, such as August Weismann, Hans Spemann, Walter Sutton, Paul Berg, Steen Willadsen, et al., who have contributed much to the research and development of our current concepts of cloning. Particularly two of the more recent renowned contributors to cloning research and experimentation are Ian Wilmut, a Ph. D. in animal genetic engineering, and Richard Seed, who founded Fertility and Genetics in the 1980s.
Cloning is a process that creates exact genetic copies of an existing cell.Cloning is a more general term that describes a number of different processes that can be used to produce genetically identical copies. The process of cloning can happen either naturally, for instance, when identical twins develop or it can be induced through synthetic conditions in a laboratory. There are three different types of artificial cloning: gene cloning, reproductive cloning and therapeutic cloning.
Cloning has become a major issue in our modern world, from moral, ethical, and religious concerns, to the problem of financial and government support. Human cloning is one of the most controversial topics, and because of this, many of the new important discoveries and beneficial technologies have been overlooked and ignored. Reproductive cloning technology may offer many new possibilities, including hope for endangered species, resources for human organ transplants, and answers to questions concerning cancer, inherited diseases, and aging. The research that led up to the ability to clone mammals started more than a century ago. From frogs to mice to sheep to humans, reproductive cloning promises many possibilities.
Many people say that everyone in the world has a twin. Today, science and technology has the ability to make this myth reality through the process of cloning. I am strongly against cloning for many reasons. People should not utilize cloning because it would destroy individuality and uniqueness, cause overpopulation, animal cruelty, it is against morals and ethics, and it violates many religious beliefs.
Secondly, “the most the human race has to loose by playing around with cloning is that the genetic diversity would be lost (Andrea Castro, 2005).” Reducing the genetic differences will produce clones that are grossly overlarge, many animals will be born with genetic mutations, and there will be a higher “risk of disease transfer (Saskaschools, 2003). “A review of all the world's cloned animals suggests that every one of them is genetically and physically defective (Leake, 2002).” Mutations will be passed on to the younger generation because if a cloned species has a mutation in their DNA this mutation will be passed on. Cloning has been linked with diseases of ageing, arthritis and, cancer.
Cloning is a process by which genetically equal organisms are created with the same DNA. In simplest terms, clones are like twins born at different times. This procedure poses various dangers to society and humankind. One of the greatest threats this procedure creates is among
The Benefits of Human Cloning In recent years, many new breakthroughs in the areas of science and technology have been discovered. A lot of these discoveries have been beneficial to the scientific community and to the people of the world. One of the newest breakthroughs is the ability to clone. Ever since Ian Wilmut and his co-workers completed the successful cloning of an adult sheep named Dolly, there has been an ongoing debate on whether it is right or wrong to continue the research of cloning (Burley).