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

Polyspermy is common in which of the following?

Cleavage divisions differ from normal mitotic divisions in that

The final event in the process of fertilization is

Cleavage is a $\underline{A}$ which starts just after fertilization as the zygote moves through $\underline{B}$ of the oviduct towards the uterus.

At which stage is the sex of the baby determined?

Vedclass Test Series

Exam Paper Generator

Online Exam Module