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  • In the case of the moth species Biston bitularia, which form of natural selection can be attributed to the phenomenon of industrial melanism<s

In the case of the moth species Biston bitularia, which form of natural selection can be attributed to the phenomenon of industrial melanism

Option: 1

Stabilizing selection 


Option: 2

Directional selection 


Option: 3

Disruptive selection 


Option: 4

Artificial selection


Answers (1)

best_answer

Industrial melanism is a phenomenon observed in moth populations, like Biston bitularia, where dark-colored individuals become more common due to pollution. In polluted areas, lighter-colored moths are easily spotted and eaten by predators, while darker-colored moths are better camouflaged and have a higher chance of survival. This shift towards darker coloration is an example of directional selection, where the selective pressure favors one extreme of a trait, in this case, darker coloration, leading to an increase in its prevalence in the population. Hence, the correct answer is option 2. 

Posted by

Sanket Gandhi

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