Ethological isolation most importantly constitutes to incompatibility with reference to genetic drift in
A
Feeding habits
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B
Tolerance of temperature
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C
Courtship behaviour
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D
Physiology
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Solution
The correct option is B Courtship behaviour
When the sexual attraction between male and female is weak or absent, it is called as ethological isolation. This behaviour causes the discontinuity in species existence.
In courtship behaviour of an animal, male takes the initiative and the female responds during copulation. If the courtship behaviour of mating is interrupted or hinders due to genetic drift it causes the occurrence of ethological isolation.