1.

Acromosome reaction in sperm is triggered by:A. capacitationB. release of lysinC. influx of `Na^(+)`D. release of fertilisin

Answer» Correct Answer - D
(d) Ovum secretes a chemical substance, called fertilisin which has number of spermophilic sites on its surface where the sperm of species specifuc type can be bound by their antifertilisin site. This fertilisin-antifertilisin reaction triggers acrosome reaction. the main aim of this reaction is to thin out the number of sperms to reduce the chances of polyspermy.


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