What helps in the penetration of egg by the sperm?

Fertilizin

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Antifertilizin

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Sperm lysin

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Fertilization membrane

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Solution

The correct option is C Sperm lysin
In contact with the surface of the egg covering, the acrosome releases its contained hydrolytic enzymes, also called sperm lysins. It is known as acrosomal reaction. During this reaction sperm penetrate the zona pallucida and fuse with oocyte membrane.
So, the correct answer is 'Sperm lysin'

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Vitelline membrane is a a)primary egg membrane b)secondary egg membrane c)tertiary egg membrane d)none

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