To which breed of sheep is the cloned animal Dolly genetically identical?

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Shropshire sheep

Scottish blackface ewe

Black Welsh Mountain

Finn Dorsett sheep

answer is A.

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Detailed Solution

Dolly, the first successfully cloned animal, was genetically identical to the Finn Dorsett breed of sheep.

The nucleus from a mammary gland cell of a Finn Dorsett ewe was used to create Dolly via somatic cell nuclear transfer, a cloning technique.

Dolly's birth was a significant breakthrough in the field of genetics and reproductive biology.

While Dolly was carried to term by a Scottish blackface ewe, she did not share any genetic characteristics with the surrogate mother since the nucleus from the egg cell of the Scottish blackface ewe was replaced with the nucleus from the mammary cell of the Finn Dorsett ewe.

Thus, Dolly was an exact genetic copy of the Finn Dorsett ewe.

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