Which of the Following Prevents Polyspermy

question 137

Multiple Choice

Which of the following prevents polyspermy?

• A)sealing of the corona radiata and release of toxins to sperm by the fertilized ovum
• B)inactivation of sperm- binding proteins in the zona pellucida and release of toxins to sperm by the fertilized ovum
• C)release of toxins to sperm by the fertilized ovum and hardening of the zona pellucida
• D)sealing of the corona radiata and hardening of the zona pellucida
• E)inactivation of sperm- binding proteins in the zona pellucida and hardening of the zona pellucida

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