NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Before the industrial revolution, biologists in England observed that most peppered moths were light in color. After the industrial revolution began, most of the peppered moths observed were dark in color. Which statement best explains the observed change in moth color during the industrial revolution?
A
Light-color moths were more fit for survival because they were less camouflaged against the darkened, soot-covered tree bark
B
Dark-color moths were more fit for survival because they were less camouflaged against the darkened, soot-covered tree bark.
C
Light-color moths were more fit for survival because they were more camouflaged against the darkened, soot-covered tree bark.
D
Dark-color moths were more fit for survival because they were more camouflaged against the darkened, soot-covered tree bark.
Explanation: 

Detailed explanation-1: -Light-colored moths mutated into dark colored moths. Light-colored moths began to die due to overpopulation. Light-colored moths were less favored for survival in the new environment. Light-colored moths began to turn black because of factory pollution.

Detailed explanation-2: -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.

Detailed explanation-3: -Before the Industrial Revolution, the light peppered moth was common, while the dark form was very rare. The light moths blended in with the light-colored trees. However, the Industrial Revolution changed the tree colors.

Detailed explanation-4: -During the early 19th century in Britain, the moths used to have salt-and-pepper coloring. But over the years black versions of the moth began to prevail. These days, the dark variants are the most common, and geneticists have long speculated that the Industrial Revolution is to blame.

Detailed explanation-5: -Before the Industrial Revolution, the majority of peppered moths were white-bodied in Great Britain. Their body color helped them camouflage against light-colored trees. Before the Industrial Revolution, the bark of trees was light colored.

There is 1 question to complete.