题目内容

How could an immature egg from tissue recovered during spaying of domestic cats develop into a mature egg suitable for cloning?The development would be carried out in an environment.

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Why do many animals in zoos fail to breed?Many animals in zoos fail to breed because the condition of the animal is not met and because the animals do not get the exercise needed to keep them in breeding condition.

Dr. Bill Ritchie plans to clone the Scottish Wildcat because ________.

A. he is a member of the team that cloned Dolly
B. the animal is endangered
C. the animal remains in existence
D. the animal is extinct

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Dr. Ritchie has got some financial support for his project from ________.

A. the team that cloned Dolly
B. the Cairngorms
C. Royal Zoological Society
D. Genecom Ltd.

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The Scottish Wildcat’s ability to hybridize with domestic cats may save the wildcat because ________.

A. hybridization will prevent the animal from becoming extinct
B. there are lots of domestic cats that may hybridize with the wildcat
C. it means that it is possible to use eggs from domestic cats for cloning
D. it is very difficult to find pure wildcats because of their crossing with domestic animals

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