Question

Which of the following is not true for a species?

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

Answer 1

The correct option is D Gene flow does not occur between the populations of a species

• Species are those which are capable of interbreeding among themselves and can exchange the genes but are reproductively isolated from another such group.
• These are closely related. The offsprings produced as a result of interbreeding will be fertile in nature. Variation is seen within the members of the same species which may result in natural selection.
• Gene flow occurs between the populations of a species.
• For example, gene flow can occur within plant species, when pollen is carried by bees or blown by the wind from one population of flowering plants to another of the same species.

Thus, the correct answer is option D.