AP BIOLOGY

EVOLUTION

MODERN THEORY OF EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
After the Industrial Revolution, dark-colored moths outnumbered light-colored moths in certain regions of England. Within the past 40 years, factories in these regions have added scrubbers and air purifiers to their smokestacks. The relative number of light-colored moths has increased. The probable reason for this increase is that ____
A
The dark-colored moths have died due to overpopulation, leaving only whitecolored moths to reproduce.
B
he dark color of the moths allows them to hunt more successfully by blending into the environment.
C
The environment favors the survival of light-colored moths over dark-colored moths.
D
The allele for light color has become dominant in the moth over the allele for dark color.
Explanation: 

Detailed explanation-1: -Tutt suggested that the peppered moths were an example of natural selection. He recognized that the camouflage of the light moth no longer worked in the dark forest. Dark moths live longer in a dark forest, so they had more time to breed. All living things respond to natural selection.

Detailed explanation-2: -Before the 1800s, nearly all of the peppered moths in England were light-colored and very hard for birds to see against light-colored tree bark and lichen. Dark-colored pepper moths weren’t common at all. The dark-colored moths that did exist were easy targets for birds to see and eat.

Detailed explanation-3: -Industrial melanism. # Light-colored moths were, thus, easy prey. # The dark-colored moths were able to camouflage on dark trees and avoid predators. # The phenomenon is known as industrial melanism.

Detailed explanation-4: -What is one method that the biologist could use to determine how closely the different types of finches are related? Look at the color of their feathers. Look for analogous structures. Study the environment in which each type of finch lives.

There is 1 question to complete.