Sentence examples for internal fertilization from inspiring English sources

Although some species are known to self-fertilize if no partners are present, most shallow-water species cross-fertilize, by means of internal fertilization.

Not surprisingly, land gastropods exhibit internal fertilization.

As mammals, they reproduce by internal fertilization.

What are the adaptive advantages of internal fertilization?

Certain amphibians have internal fertilization but no intromittent organs.

All caecilians are believed to have internal fertilization.

All mammals have internal fertilization and an erectile penis.

"In chimpanzees, as in most mammals, internal fertilization gives females last word," Dr. Boesch said.

First, there is a tendency toward the development of structures to permit internal fertilization.

Internal fertilization also occurs among some fishes and other aquatic breeders.

A few clams, such as the gem clam (Gemma), have internal fertilization and development.