Which of the following would be the most acceptable explanation for why cloned animals actually have telomeres of normal length on their chromosomes?
A)The telomeres were elongated before transfer to the egg by telomerase in egg cell cytoplasm.
B)The telomeres were elongated after transfer to the egg by telomerase in egg cell cytoplasm.
C)The telomeres were shortened before transfer to the egg by telomerase in egg cell cytoplasm.
D)The telomeres were shortened after transfer to the egg by telomerase in egg cell cytoplasm.
E)The telomeres were replaced prior to mitosis by DNA repair.

Question

Quizplus · Accepted Answer

Cloned animals have telomeres of normal length on their chromosomes because the telomeres were elongated after transfer to the egg by telomerase in egg cell cytoplasm. This is because the somatic cells used for cloning have shortened telomeres due to repeated cell division, but the egg cell used for cloning still has telomerase activity. When the somatic cell nucleus is transferred to the egg cell, the telomerase in the egg cell adds telomeres to the transferred nucleus, resulting in normal-length telomeres in the cloned animal.

Which of the Following Would Be the Most Acceptable Explanation