animal cloning definition

But as shown by Cc the cloned cat, a clone may not turn out exactly like the original pet whose DNA was used to make the clone.Reproductive cloning may enable researchers to make copies of animals with the potential benefits for the fields of medicine and agriculture.For instance, the same Scottish researchers who cloned Dolly have cloned other sheep that have been genetically modified to produce milk that contains a human protein essential for blood clotting. Human identical twins are also clones.

Dolly died when she was six years old, about half the average sheep's 12-year lifespan.Therapeutic cloning involves creating a cloned embryo for the sole purpose of producing embryonic stem cells with the same DNA as the donor cell. These include an increase in birth size and a variety of defects in vital organs, such as the liver, brain and heart. In 2003, another endangered type of ox, called the Banteg, was successfully cloned. G.E.- 10006 2. Animal cloning 1. Soon after, three African wildcats were cloned using frozen embryos as a source of DNA. There currently is no solid scientific evidence that anyone has cloned human embryos.In 1998, scientists in South Korea claimed to have successfully cloned a human embryo, but said the experiment was interrupted very early when the clone was just a group of four cells.

The study panel did not address the issue of whether human reproductive cloning, even if it were found to be medically safe, would be—or would not be—acceptable to individuals or society. in German As a consequence, clones created from a cell taken from an adult might have chromosomes that are already shorter than normal, which may condemn the clones' cells to a shorter life span. Another concern is that the cloned animals that do survive tend to have various health problems and shorter lifespans.

For instance, Dolly was the only clone to be born live out of a total of 277 cloned embryos. Examples of vectors include bacteria, yeast cells, viruses or plasmids, which are small DNA circles carried by bacteria. Other consequences include premature aging and problems with the immune system. Two years later, researchers in Japan cloned eight calves from a single cow, but only four survived.Besides cattle and sheep, other mammals that have been cloned from somatic cells include: cat, deer, dog, horse, mule, ox, rabbit and rat. cloning definition: 1. the process of creating an exact copy of a plant or animal by using its cells: 2. used for or…. Animal cloning. In addition, it may be possible to learn more about the molecular causes of disease by studying embryonic stem cell lines from cloned embryos derived from the cells of animals or humans with different diseases. In addition, it may be possible to learn more about the molecular causes of disease by studying embryonic stem cell lines from cloned embryos derived from the cells of animals or humans with different diseases.

Others see human cloning as a way to avoid passing on a deleterious gene that runs in the family without having to undergo embryo screening or embryo selection.Therapeutic cloning, while offering the potential for treating humans suffering from disease or injury, would require the destruction of human embryos in the test tube. kloning…

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