Donor Cell example essay topic
292 words
Dear dr vick john and i jumped into the car and ran away and Cloning, is it good or bad? Many people have different opinions about how and when things should be cloned. In this article you will find out how to clone, what has been cloned, and then you can make a decision on whether clone is good or bad. Cloning is based on nuclear transfer. Nuclear transfer involves the use of two cells. The recipient cell is normally an unfertilized egg taken from an animal soon after ovulation. These eggs are poised to suction on the end of a fine pipette and uses an extremely fine micro pipette to suck out the chromosomes, sausage- shaped bodies- that incorporate the cell's DNA. Then, the donor cell, complete with it's nucleus, is combine with the recipient egg. What has been cloned? Now, that's the question that you " re probably asking your self.
The three species that have been cloned are mice, calves, and sheep. Recently, Ryu zo Yanagimachi at the University of Hawaii at Honolulu cloned a pair of mice by transferring donor nuclei- not whole eggs- into eggs. Then, he took the nuclei from cells called cumulus cells, which surround the ovary. Second, was Dolly, a sleep that was the first mammal cloned from adults' cells.
The third animal cloned was Polly a transgenic clone of a poll Dorset sheep. A gene from human protein, factor IX, was added to the cell that provided the lamb genetic heritage. Fourth, were Megan and Morag, which were the first mammals, cloned from cultured cells. Last, were multiple calves' clones from a single adult cow, third.
