Once an egg has been fertilized,what event is crucial for preventing additional sperm from inserting DNA into the egg?
A)the acrosomal reaction
B)the cortical reaction
C)cleavage
D)follicle maturation

Question

Quizplus · Accepted Answer

The cortical reaction is necessary for preventing polyspermy, which is the entry of multiple sperm into the egg. During the cortical reaction, cortical granules release their contents into the space between the egg cell membrane and the zona pellucida, causing the zona pellucida to harden and prevent additional sperm from entering the egg. The acrosomal reaction is the process by which the sperm releases enzymes to penetrate the zona pellucida surrounding the egg. Cleavage is the process of cell division that occurs after fertilization, and follicle maturation is a process related to the development of eggs in the ovary. Neither of these events is directly related to preventing polyspermy.

Once an Egg Has Been Fertilized,what Event Is Crucial for Preventing