Which of the following is not true for a species ?

Options

A. Members of a species can interbreed
B. Variations occur among members of a species
C. Each species is reproductively isolated from every other species
D. Gene flow does not occur between the populations of a species

Answer

D

Explanation

Option (d) is not true for species because gene flow means the spread of genes through populations as affected by movements of individual and their propagules, e.g. spores, seeds etc. Gene flow ensures that all populations of a given species share a common gene pool, i.e. it reduces difference between populations. The interruption of gene flow between populations is a pre requisite for the formation of new species.