Many Amphibian Species Release Their Sperm and Eggs Directly into a Watery

question 22

Multiple Choice

Many amphibian species release their sperm and eggs directly into a watery environment.All of the following mechanisms might ensure species-specific fertilization in these populations EXCEPT

• A)acrosomal complexes in sperm.
• B)complex coverings of the egg.
• C)specific protein binding between sperm and egg.
• D)fertilization envelopes.
• E)blocking of non-species-specific mRNA sequences.

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