The "slow block" to polyspermy is due to
A)a transient voltage change across the membrane.
B)the consumption of yolk protein.
C)the jelly coat blocking sperm penetration.
D)formation of the fertilization envelope.
E)inactivation of the sperm acrosome.

Question

Quizplus · Accepted Answer

The slow block to polyspermy is due to the formation of the fertilization envelope, a protective layer that forms around the egg cell following fertilization. This envelope prevents additional sperm from fertilizing the egg by altering the egg's membrane properties and making it impenetrable to sperm.

The "Slow Block" to Polyspermy Is Due to