Which of the Following Prevents Polyspermy

question 141

Multiple Choice

Which of the following prevents polyspermy?

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

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