What year was Dolly the sheep cloned and what was the process used to clone her?

Answer 1

Dolly was born July 5th, 1996. She was cloned from a cell taken from a six year-old ewe. The process is called somatic cell nuclear transfer and involves a cell placed into a de-nucleated ovum. This means that the nucleus of a somatic (body cell other than sperm or egg) is removed - in this case from the first ewe - and the rest of that cell is discarded. The nucleus contains the DNA needed to make the clone. At the same time the nucleus of an ovum (egg cell - Dolly's in this case) is removed. The somatic cell is then inserted into the egg cell (ovum) where it is reprogrammed by the host (egg) cell and the egg, carrying the somatic cell nucleus (with DNA) is stimulated to divide. The The cells, after a number of divisions in cultures, then fuse and form a blastocyst, which is like a pre-embryo of about 100 cells with the original DNA of the first cell (which came in this case from the ewe). However, the mitochondria from the DNA is missing. The mitochondria converts food molecules into energy. Thus Dolly is not an exact clone of the ewe. She died of a lung illness very common to sheep kept indoors (Dolly was for security reasons) called Ovine Pulmonary Adenocarcinoma. It took cells of 227 eggs for Dolly to actually be cloned. 29 of those cells became embryos. 3 lambs were born of that but only Dolly survived. There is much promising research in stem cells for those who need transplants or suffer from Parkinson's and while this sort of cell transfer is risky and rarely used, with time and technology scientists will hopefully refine it more soon.
http://en.wikipedia.org/wiki/Dolly_the_Sheep

Answer 2

No, a clone will consistently be borne as a clean born. in spite of the incontrovertible fact that, DNA ameliorations with the aid of the years. Small mutations acquire in our DNA as we boost older, and that's between the excuses maximum cancers is a lot greater basic in old human beings than in teenagers. So in case you used DNA from and person animal cellular that's believed the animal will age quicker, because of the fact the DNA is already elderly on the commencing element. however the cloned animal will start up as a toddler, and boost in the comparable %. as all different non-cloned animals.

Answer 3

1997

Answer 4

1997 she was cloned.

They used a procedure similar to stem cell research in order to clone her

Answer 5

1997, the proccess is called somatic cell nuclear transfer.

http://en.wikipedia.org/wiki/Dolly_the_sheep

heres a good link.