The cortical reaction of sea urchin eggs functions directly in
A) the formation of a fertilisation envelope.
B) the production of a fast block to polyspermy.
C) the generation of an electrical impulse by the egg.
D) the fusion of egg and sperm nuclei.

Question

Quizplus · Accepted Answer

The cortical reaction in sea urchin eggs leads to the formation of a fertilization envelope, which acts as a slow block to polyspermy, preventing additional sperm from entering the egg.

The Cortical Reaction of Sea Urchin Eggs Functions Directly in