The Zona pellucida of a mammalian egg serves | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The $Zona$ $pellucida$ is a glycoprotein layer surrounding the plasma membrane of a mammalian oocyte. It plays a crucial role in fertilization by

Vedclass · Accepted Answer

Prevents polyspermy

Vedclass · Answer

(C) The $Zona$ $pellucida$ is a glycoprotein layer surrounding the plasma membrane of a mammalian oocyte. It plays a crucial role in fertilization by acting as a species-specific barrier for sperm binding. Once a single sperm penetrates the $Zona$ $pellucida$ and fuses with the egg membrane,cortical granules release enzymes that modify the $Zona$ $pellucida$ (the zona reaction),which prevents other sperm from binding or penetrating,thereby preventing polyspermy. It also protects the developing embryo during its transport through the oviduct and prevents premature implantation.

The $Zona$ $pellucida$ of a mammalian egg serves which of the following purposes?

Similar Questions

In oviparous individuals,the fertilized egg is covered by

Cleavage is a method of division of a fertilized egg in which the egg:

Incomplete cleavage is a type of which division?

In eggs which have very thick and resistant membrane,e.g.,fishes and insects,the sperm penetrates through a special canal called:

The chemical substance present in the egg that attracts sperm is known as...

Vedclass Test Series

Exam Paper Generator

Online Exam Module