Zona pellucida barrier to other sperm after fertilization.
Zona pellucida glycoproteins are accountable for species-restricted binding of sperm to unfertilized eggs, generating sperm to undergo acrosomal exocytosis, and containing sperm from binding to fertilized eggs.
The zona pellucida (ZP) is a fairly thick extracellular coat that surrounds all mammalian oocytes, ovulated eggs, and preimplantation sources . It is a highly specialized extracellular coat that brings out functions specific to mammalian reproduction.
The zona pellucida first occurs in unilaminar primary oocytes. It is perspired by both the oocyte and the ovarian follicles. The zona pellucida is covered by the corona radiata. The corona is comprised of cells that care for the egg when it is ejected from the ovary.
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Complete Questipon is,
A. zona pellucida
B. zygote
C. cleavage
D. morula