NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What caused trees in England to change color and therefore also change the dominant color in the moth population?
A
rain
B
paint
C
birds
D
pollution
Explanation: 

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: -Genetic Changes 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: -When the industrial revolution hit England, black soot was released into the air and stuck to the trees, causing them to darken in coloration. During this time, light moth populations decreased and the number of black moths increased.

Detailed explanation-4: -Industrialisation and domestic coal fires had caused sooty air pollution, which had killed off lichens and blackened urban tree trunks and walls. So, it was now the pale form of the moth that was more obvious to predators, while the melanic form was better camouflaged and more likely to survive and produce offspring.

Detailed explanation-5: -Scientists have discovered the specific mutation that famously turned moths black during the Industrial Revolution. In an iconic evolutionary case study, a black form of the peppered moth rapidly took over in industrial parts of the UK during the 1800s, as soot blackened the tree trunks and walls of its habitat.

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