PATHOLOGY MCQ
GENETICS AND DISEASE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Gamete
|
|
|
Egg
|
|
|
Somatic
|
|
|
Skin
|
Detailed explanation-1: -Because Dolly’s DNA came from a mammary gland cell, she was named after the country singer Dolly Parton.
Detailed explanation-2: -It was then only a matter of time before Dolly-a sheep produced from the nuclear transfer of a mammary gland cell of a Finn Dorset ewe (Wilmut et al., 1997)-was delivered in the fall of 1996. This was the first cloned mammal in history.
Detailed explanation-3: -Dolly (5 July 1996 – 14 February 2003) was a female Finn-Dorset sheep and the first mammal that was cloned from an adult somatic cell.
Detailed explanation-4: -To create Dolly, scientists used somatic cell nuclear transfer, or SCNT, a revolutionizing technique that now is a cornerstone of stem cell research. In SCNT scientists begin by removing the nucleus from a somatic, or body, cell of a donor mammal. They then collect an egg cell from a donor of the same species.
Detailed explanation-5: -Dolly had a white face. From 277 cell fusions, 29 early embryos developed and were implanted into 13 surrogate mothers.