- Secretions of acrosome heip One sperm enter cytoplasm of ovum through zona pellucida
- All sperms except the one nearest to the ovum lose ther tails.
- Cells of corona radiate trap all the sperms except one
- Only two sperms nearest the Ovum penetrate zona pellucid
What happens during fertilizaton in humans after many sperms reach close to the ovum?
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