How Does an Egg Assure It Is Not Fertilized by Sperm

question 68

Multiple Choice

How does an egg assure it is not fertilized by sperm from the wrong species?

• A) The sperm from a different species simply wouldn't survive.
• B) Sperm from one species don't fit the egg of another.
• C) A zygote prevents that from happening.
• D) The proteins on the outside of the egg will only bind with a sperm cell of the same species.
• E) The proteins on the sperm cell are the only type that will bind with an egg.

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