Question

Choose the correct answers from the alternatives given.
Which of the following is a premating isolating mechanism?

• A. Gamete isolation
• B. Habitat isolation
• C. Temporal isolation
• D. Both (b).and (c)

Answer 1

The correct option is C Temporal isolation

Pre-mating isolating mechanisms. Factors which cause species to mate with their own kind (assortative mating).

a) Temporal isolation. Individuals of different species do not mate because they are active at different times of the day or in different seasons.

b) Ecological isolation. Individuals mate in their preferred habitat, and therefore do not meet individuals of other species with different ecological preferences.

c) Behavioural isolation. Potential mates meet but choose members of their own species.

d) Mechanical isolation. Copulation is attempted, but the transfer of sperm does not take place.

So correct option is C, Temporal isolation.