Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question
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Question

Assertion (A): A nucleus taken from a somatic cell and implanted into an enucleated egg cell of a frog often gives rise to an adult individual. Reason (R): Differentiated donor nucleus could be totipotent.
Options
A Both A and R are individually true and R is the correct explanation of A
Correct Answer
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true
Correct Answer

Option A is the correct answer.

Detailed Explanation

Both A and R are true, and R is the correct explanation of A. The classic experiments by John Gurdon (and later Dolly the sheep) showed that a nucleus from a differentiated somatic cell, when implanted into an enucleated egg, can direct development to a complete adult. This demonstrates that the donor nucleus retains totipotency (the ability to give rise to all cell types) despite being differentiated.

Hint

Cloning experiments demonstrate that nuclear reprogramming can restore developmental potential.

Question Info

Course: ZOO 101
Topic: ZOO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 908 of 2214
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