An entomologist discovered that two morphologically identical crickets sang completely different mating songs and this resulted in the two populations never mating.Thus they were
A)sister groups.
B)sibling species.
C)paraphyletic.
D)polyphyletic.

Question

Quizplus · Accepted Answer

The fact that the two populations have different mating songs and do not interbreed despite being morphologically identical indicates that they are sibling species. Sibling species are two or more species that are morphologically indistinguishable but have evolved reproductive isolation, preventing them from interbreeding. Sister groups refer to two or more species that share a common ancestor and are each other's closest relatives, which is not necessarily the case here. Paraphyletic and polyphyletic refer to classification groups that do not follow the rules of monophyly and are not relevant to this situation.

An Entomologist Discovered That Two Morphologically Identical Crickets Sang Completely