Home Biology Evolution Evidences For Evolution An inter-breeding population of finches beca…
Biology Evolution Evidences For Evolution Single Correct MCQ
Published on: August 14, 2026

An inter-breeding population of finches became separated geographically, forming two isolated groups. Each group then became subject to different selective pressures. One group was then introduced into the habitat of the other. Which one of the following would determine whether they now formed two distinct species?

A
They had been separated for more than three million years.
B
They failed to produce fertile F 1 hybrids.
C
They showed marked differences in the shape of their beaks.
D
Their plumage had become markedly different.

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