Question

I) with the help of labelled diagrams describe the stages in the acrosome reaction in a mammalian sperm.

Answer 1

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Answer 2

The acrosome reaction (AR), take place only when the sperm needs to penetrative ovum wall.

The Acrosome Reaction (AR)  stages.

A) is the sites where the AR begins for the mammal  

C) Diagrams of successive stages of the AR in mammal; the inner acrosome membrane

(i) remains structurally unchanged during and after the AR. The plasma membrane of the equatorial segment region (e) mammal  sperm head changes its characteristics upon the AR to fuse with the egg plasma membrane.