Which of the following selection pressures is responsible for the limited evolutionary changes experienced by alligators and other crocodilians?

a.

stabilizing selection

b.

directional selection

c.

disruptive selection

d.

high mutation rate

The answer is a. stabilizing selection. This is the correct answer because genetic phenotype's among alligators and crocodiles were conserved during the evolution of the species. The reptiles have very little phenotypic variation or difference in physical traits, which would is the result of a stabilizing genetic selection process.