GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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replication and dedifferentiation of adult stem cells from sheep bone marrow
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use of mitochondrial DNA from adult female cells of another ewe
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fusion of an adult cell’s nucleus with an enucleated sheep egg, followed by incubation in a surrogate
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separation of an early stage sheep blastula into separate cells, one of which was incubated in a surrogate ewe
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Detailed explanation-1: -The technique used to produce her later became known as somatic cell nuclear transfer (SCNT).
Detailed explanation-2: -Dolly was cloned from a cell taken from the mammary gland of a six-year-old Finn Dorset sheep and an egg cell taken from a Scottish Blackface sheep.
Detailed explanation-3: -Developing cells were placed in another sheep. Organisms with desirable traits were crossed. The DNA from the egg of a sheep was removed. The DNA from the udder cell was added to an egg cell.
Detailed explanation-4: -1997: The world learns of the existence of Dolly the sheep, the world’s first successfully cloned mammal. Dolly was cloned at the Roslin Institute in Scotland. Researchers used somatic-cell nuclear transfer with a cell taken from a 6-year-old ewe.