Question

What of the following is incorrect during amphimixis?

• A. Swelling of sperm nucleus
• B. Initial movement of male nucleus along copulation path
• C. Establishment of achromatic spindle by proximal centriole
• D. Completion of second meiotic division if not occurred already

Answer 1

The correct option is B Initial movement of male nucleus along copulation path

Amphimixis is known as the sexual reproduction involving the fusion of two different gametes to form a zygote.
During this:-

1. The sperm nuclei absorb water and swell up to form male pronuclei.
2. This pronucleus moves to the copulation path, not the sperm or male nucleus.
3. Establishment of the achromatic spindle by proximal centriole and second meiotic division is done after the fusion of male and female gametes.

So the correct option is 'Initial movement of the male nucleus along copulation path'.