Notifications
Clear all
0
03/01/2022 8:02 pm
Topic starter
How does zona pellucida of ovum help in preventing polyspermy?
1 Answer
0
03/01/2022 8:04 pm
Polyspermy means an egg has been fertilized by more than one sperms. The zona pellucida is modified by proteases. The proteases destroy the protein link between the cell membrane and the vitelline membrane, remove any receptors that other sperm have bound to, and help to form the fertilization membrane that prevents polyspermy.