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.

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.

Luigi0210 · Answer

Based on the information provide, the flies are likely from different SPECIES. They might be from same genus, based on them having similar characteristics and size. But, reproductive barriers are one of the defining factors for distinguishing between different species.