Fertilization is characterized by
A)a sperm's fertilin proteins binding to the follicle's integrin molecules
B)a block to polyspermy
C)multiple spermatozoa penetrating the ovum
D)blastocyst formation
E)both b and d

Question

Quizplus · Accepted Answer

Fertilization involves a block to polyspermy, which is the entry of multiple spermatozoa into the ovum. Blastocyst formation occurs after fertilization, during the process of implantation. A sperm's fertilin proteins binding to the follicle's integrin molecules is one of the steps in the process of fertilization, but it is not a defining characteristic.

Fertilization Is Characterized by