Question

A scientist finds two similar flies that have the same size, coloration, and overall morphology. However, further studies show that no mating is possible between them. What could be the appropriate interpretation for this?
A.) Both flies belong to the same species but different genus.

B.) Both flies belong to the same genus but different species.

C.) Both flies belong to the same genus and same species.

Answer 1

The answer is B.) Both flies belong to the same genus but different species.

Species is a group of similar organisms able to reproduce (to exchange genes and interbreed) only within the group. That means that organisms from different species could not exchange genes. So, if two similar flies are no able to mate, it can be concluded that they are not the same species. Still, they are similar enough to belong to the same genus, but different species.