OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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dark
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light
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Either A or B
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None of the above
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Detailed explanation-1: -The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-coloured moths increased at that time, an example of industrial melanism.
Detailed explanation-2: -Scientists call this effect industrial melanism. Natural selection is still at work in the peppered moth. In the last 50 years, most industrial countries have significantly reduced their pollution. As predicted by the theory, the number of dark moths are dropping as the forests become cleaner.
Detailed explanation-3: -The correct answer: Peppered moths are generally light in color and blend into the trunks of the trees they live on. Populations of peppered moths that are found in areas where soot has blackened the tree trunks are dark in color.