What Prevents Polyspermy from Occurring

question 40

Multiple Choice

What prevents polyspermy from occurring?

• A)The ovum plasma membrane depolarizes.
• B)The zona pellucida lifts away from the plasma membrane.
• C)Only one sperm can normally enter the zona pellucida.
• D)Both the ovum plasma membrane depolarizes and the zona pellucida lifts away from the plasma membrane are correct.

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