NEET BIOLOGY

Detailed explanation-1: -Click for more detail. As the trees darkened with soot, the light-colored moths were easier to see. They were eaten by birds more and more, while the rare dark colored moths blended in better on the darker trees.

Detailed explanation-2: -Finally it was found that the color was genetic. Moths passed their color to the next generation. Eggs from light moths developed into light moths and dark moth eggs turned to dark adults. The dark color was caused by a mutation in the DNA of a single moth, and the mutated gene had been passed to all its offspring.

Detailed explanation-3: -Both moths were represented in the population but we think the dark ones were getting eaten at a higher rate. 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.

Detailed explanation-4: -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.