What distinguishes the acrosome reaction during fertilization from the cortical reaction in mammalian reproduction?

💡 Explanation

The acrosome reaction involves the release of enzymes that digest the zona pellucida, enabling sperm penetration, because this reaction is necessary for the sperm to physically enter the egg. Therefore, the acrosome reaction facilitates penetration, rather than the cortical reaction which blocks further sperm entry after fertilization is initiated.

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