alleryChanges induced after the first sperm contacts the zona pellucida help to:
ARelease several ova
BForm the placenta immediately
CStart a new menstrual cycle
DBlock entry of additional sperms
Answer & Solution
Correct answer: D. Block entry of additional sperms
The sperm–oocyte interaction induces changes that prevent additional sperm entry, avoiding polyspermy. Acrosomal enzymes assist the first sperm in penetrating the oocyte coverings.
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