... animals (Levine 1). In 1938, Hans Speman proposed cloning a mammal by transplanting an adult cell's nucleus into a fertilized egg. This process is called nuclear transfer and was initially used to clone a frog in 1952 (Sinha 59). Using this process, nuclear DNA from the body cell of a donor frog was injected into the egg cell of a recipient frog whose nuclear genetic material was removed. The fused cells divided ... just like a normal fertilized egg and formed an embryo that was genetically identical to the donor frog. In 1980 mice were successfully ... Institute, accomplished this fea...

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... . As defined in the text, a somatic cell is "any cell in the body except a germ cell," and contains the same entire set of DNA. Dolly's story is revolutionary, in that, before her birth, it was deemed unfeasible to make a somatic cell differentiate as if it were a fertilized egg. Dolly, conversely, changed that notion. She was created by taking a somatic cell from the udder of a white-faced sheep ... and depleting it of all nutrients so that it ceases to develop. It is then electrically fused with an egg taken from a black-faced sheep. The egg, having had its nucleus removed, is stripped...

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... cloning. A scientist would take an ovum from a female donor, removing the nucleus and thus leaving an "empty" egg. From there, a single skin cell (somatic cell) would be removed from either, or both, parents and the nucleus from these somatic cells would then be inserted into the " ... This number could be largely reduced worldwide through the process of Therapeutic Cloning. Starting out quite similarly to adult DNA cloning, with a nucleus inserted into an empty egg. But rather than allowing the egg carry out the process of development into a child, it's growth would be stopped around the...

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... . Then they combine the DNA fragment with the plasmid DNA to form recombinant DNA. This plasmid DNA can reproduce very easily, which also helps the new recombinant DNA replicate easily. So, scientist can generate large quantities of the recombinant DNA and the particular gene of interest. Animals can also be cloned. This is done by first destroying the nucleus of an egg cell from the species to be ... cloned. A nucleus is then removed from a cell of an animal of the same species and injected ... into the egg cell. The egg, with its new neculeus, develops into an animal ... ...

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... cell of an existing organism is transferred into an oocyte from which the nucleus has been removed" (Council on Ethical and Judicial Affairs 1). In other words, cloning is the method of produce a baby that has the same genes as its parent. You take an egg and remove its nucleus, which contains the DNA ... /genes. Then you take the DNA from an adult cell and insert it into the egg, either by fusing the adult cell with the enucleated egg, or by a sophisticated nuclear transfer. You then stimulate the reconstructed egg electrically ... or chemically and try to make it start to divide and be...

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... liver disease according to PPL. In order to utilize these stem cells, a skin cell (or any cell for that matter, seeing as how every cell in our body carries genetic material) is injected into a woman's egg, and from that egg, an embryo is created (Donn). It is these embryonic stem cells that hold so ... for a donor and all the complications that go along with donor transplants. Yet in order to proceed to the level of single, patient-derived cell regeneration, more studies need to be done on "selective gene expression" which is most easily studied on embryonic stem cells (Poste). So once ...

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... second meiotic division of spermatogenesis" according to Dr. Robert Tissot. If chromosomes fail to separate before turning into gametes, every sperm cell will be afflicted with an extra Y chromosome. Symptoms of XYY syndrome are unusual height, average to low IQ's, and an increase ... the most affected part of the cell. In a normal cell, the nucleus contains 46 chromosomes, 23 from the egg and 23 from the sperm. In contrast, a cell infected with XYY syndrome will have 47 chromosomes in the nucleus, 23 from the egg and 24 from the sperm. This ... extra chromosome is passed onto the zygote...

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... transfer involves the use of two cells. The receiving cell is normally an unfertilised egg taken from an animal soon after ovulation. The donor cell is the one to be copied. A scientist removes the chromosomes, a chain-like substance that incorporates the cell's DNA, from the recipient egg cell. The donor cell is then combined with the recipient egg. Some fused cells start to develop like a normal ... embryo and produce progeny if implanted into the uterus of a surrogate mother'. Then on October 13th 2001, human cloning research had an even bigger breakthrough. Cloned early-stage human ...

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... species also have something called plasmids. Plasmids are small molecules of DNA that have genes in them. Restriction enzymes are able to recognize and cut apart a foreign DNA that can enter a cell. This can help fight off viruses because it can find bad DNA and reject it. Every living thing from the simplest to the ... route of physical traits or disease through a family, but they can follow the way of genetic material by tracking RFLP's through generations if they have DNA from all the family members. To find a particular gene, geneticists look for RFLPs that are always inherited wit...

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... the person being cloned. "To clone any animal, Navara says the first step is to take the DNA out of an egg. DNA is the part of a cell that tells it what to do. Then, scientists inject the DNA from the organism they want to clone into that egg and try to get it to divide and grow into an embryo. In reproductive cloning, the embryo ... is then implanted into a surrogate, where it is supposed to continue to develop" (Discovery 1). What cloning does is that it copies the DNA/genes ... or replacement of defective gene sequences. Gene therapy is currently limited because of inefficient vecto...

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... be as the same as the original organism because the content of DNA is totally the same. The first successful cloning Doly the sheep Biological significance Human somatic cell nuclear transfer, otherwise known (somewhat inaccurately) as creating an embryo by "cloning," involves1: The starvation and subsequent implantation of DNA from specialized, non-sexual cells of one organism (e.g., cells specialized ... to make that organism's hair or milk) into an egg whose DNA nucleus has been removed. The resulting egg and nucleus are shocked or ... chemically treated so that the egg begins to beh...

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... a new law of nature that is being defied and the government cannot take that away. True human cloning involves taking a somatic cell from a person and removing its nucleus. Then the nucleus of a fertilized egg cell is removed and placed in the somatic cell. This is impossible in humans right now because the somatic cells are specialized and there are many genes that have been ... help in finding cures for certain diseases and disorders such as cancer, aids, and leukemia. Scientists can take DNA from healthy cells and copy it then inject it into an unhealthy cell to cancel out the "bad" ...

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... before scientists can build a human from scratch. Sequencing the human genome requires identifying 3.2 billion chemical "letters" located on the 46 coiled strands of DNA, found in nearly every human cell. While researchers now know the order in which DNA is arranged on the chromosomes, they haven't identified those chemical "letters", which contain the instructions for making the proteins that comprise the human body ... range of traits such as hair and eye colour, bigger muscles and so on. (Blackford 1999) Neighbourhood clinics could insert a block of genes into a newly fertilized egg....

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... would be to replace the haploid nucleus of the host egg with a donor's nucleus containing a full set of genes. Applying an electrical current would then jolt the host egg into beginning growth. If implanted in a surrogate mother, the egg could then continue through its nine-month gestation period. ... grieving parents the chance to recapture the child they have lost. A lock of hair taken from a baby book could provide the DNA necessary for cloning their daughter. Although the clone would obviously not have an identical personality to it genetic predecessor, the two would more ... actua...

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... in a lab). With this DNA product the scientists added transcriptase to the mix along with the RNA bases and the lo and behold the RNA was formed. The scientists then created a "juice" for the RNA to create a virus within. This "juice" consisted of shredded up human cells. From this "juice" was extracted the nucleus, mitochondria and other cell structures not needed for ... in the mice. Interleukin-4 is a substance that aids in the immune systems response to foreign invaders. Supposedly the production of interleukin-4 would be so enhanced that it would recognize a mouse egg as foreign, a...

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... when cells are unable to produce necessary proteins needed to change certain chemicals into others or to carry substances from one place to another. The cell's inability to carry out these functions often results in mental retardation. Almost 1 in every 5000 children is born with defective enzymes resulting in this ... include cancer, high blood pressure, heart disease, diabetes, Alzheimer's disease, and obesity. Chromosomes are structures made up of DNA and protein. They are located in the nucleus of each cell. Because chromosomes are carriers of the genome, such abnormalities in chromos...

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... animal that is genetically identical to its "parent." In the cloning process, a scientist takes the genetic information of an organism and inserts it into an unfertilized egg cell from a member of the same species (MacKinnon, 4). The egg then begins to develop, functioning under the direction of its newly acquired genetic code, and eventually a genetically identical organism is created. (MacKinnon, 4). Yet, the ramifications of ... (Nash, 1). It would be a delayed twin of a child for example. In addition, cloning presents an even greater danger. The replication and copying of DNA causes...

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