Fertilization by More Than One Sperm Would Result in a Polyploidy

question 5

Multiple Choice

Fertilization by more than one sperm would result in a polyploidy and an inviable zygote. What is the FIRST line of defense against polyspermy?

• A)species specific recognition of proteins on the outer coat of the egg
• B)changes in the membrane potential of the egg prohibiting additional sperm from entering
• C)products released from the egg changing the zona pellucida of the egg and prohibiting additional sperm from entering
• D)capacitation in the sperm fertilizing the egg

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