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Assertioin Industrial melanism is an example of disruptive selection Reason Evolutionary change in moth is provided by the response of moth species to the directional selection pressure produced by the atmospheric pollutionA. Both Assertion and Reason are true, but Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Assertion is false, but reason is true |
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Answer» Correct Answer - D Upto 1848, all reported forms of the preppered moth (Bistone betularia) appeared creamy white with black dots and dark shaded areas in 1848, a black form of moth was recorded in Manchester and by 1895, 98% of peppered moth population in Manchester was black within the last 100 years Darkened forms of about 80 speices of moths have appeared in varying frequencies throughout the United Kingdom. This is a phenomenon known as industrial melaism. It is an example of directional selection in which evolutionary change is provided by the response of moth species to the directional selection pressure prodeced by the atmospheric pollution, which accompanied the industrial revolution |
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