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.

Question

Quizplus · Accepted Answer

Blocking of non-species-specific mRNA sequences is not a mechanism that ensures species-specific fertilization in amphibians. The other options (acrosomal complexes in sperm, complex coverings of the egg, specific protein binding between sperm and egg, and fertilization envelopes) all play a role in ensuring that the sperm of one species can successfully fertilize the eggs of that same species.

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