GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Light moths were easy to see against sooty trees and were eaten
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Light moths were killed by soot
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The birds that ate the dark moths were killed by soot
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Dark moths were produced by industrial processes
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Detailed explanation-1: -However, the Industrial Revolution changed the tree colors. After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form. Click for more detail. As the trees darkened with soot, the light-colored moths were easier to see.
Detailed explanation-2: -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-3: -Q. Why did the population of peppered moths in England change from the light variation to the dark variation after the Industrial Revolution? The soot from industrial revolution caused the light peppered moth to fly away, and only the dark variation was left.
Detailed explanation-4: -When the environment changed, due to pollution, the moth population shifted because light-colored moths became easier to see so they were eaten more often. Organisms that survive have a better chance of reproducing so the population continues to grow.
Detailed explanation-5: -With the advent of industry and pollution in urban England, soot began to accumulate on the trees, giving them a darker appearance. As a result, the light moths were no longer the best suited for the environment.