A) Seasonal isolation
B) Reproductive isolation
C) Behavioural isolation
D) Temporal isolation
Correct Answer: B
Solution :
Gene flow occurs between the populations of a given species (but not between populations of different species). For two species to remain separate, these have to be reproductively isolated (gene flow must not occur between them). It may be (a) premating (habitat, temporal, behavioural) or (b) post mating (gamete, zygote, hybrid sterility, \[{{F}_{2}}\] fitness).
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