When the Sheep Dolly Was Successfully Cloned,it Was Produced by Growing

question 34

Multiple Choice

When the sheep Dolly was successfully cloned,it was produced by growing an in vitro fertilized egg where the normal egg nucleus had been removed and replaced by a nucleus from an adult.Since this nucleus is from an old mature animal,we would expect it to ______.Interestingly,tests show that this did not happen,a fact that currently puzzles researchers.

• A)have additional Barr bodies
• B)be mutated
• C)have shorter telomeres
• D)have longer telomeres
• E)express transcription and translation more rapidly

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