Question

Grey crescent develops in.

• A. Eye of frog
• B. Fertilized egg of frog
• C. Brain of rabbit
• D. Eye of cockroach

Answer 1

The correct option is B

Fertilized egg of frog

The Correct option is B.

Explanation for the correct option:

1. The vegetal pole and the animal pole of developing frog eggs are separated by a region known as the grey crescent.
2. It can be found on the opposite side of the sperm entrance.
3. The grey crescent is crucial because it aids in the embryo's polarity establishment.

Final answer: Grey crescent develops in a fertilized egg of the frog.