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Extrusion of second polar body from egg nucleus occurs:
(a)After the entry of sperm, before the completion of fertilization
(b)After the completion of fertilization
(c)Before the entry of sperm
(d)Has no relation to sperm entry.

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Important Questions on Human Reproduction

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Mitochondria and chloroplast are:
(i) Semi - autonomous organelles
(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following option is correct?

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Statement I : Penetration of sperm into ovum is a chemical process
Statement II : Acrosome of sperm secretes hyaluronidase which dissolves vitelline membrane of ovum
The correct option among the following is

