Question

Natural selection leads to the evolution of desired traits at which of the following level?

• A. Level of community
• B. Level of species
• C. Level of population
• D. Tissue level

Answer 1

Answer:

C. Level of population

Natural selection operates at the population level because organisms are the ones that have to adapt to a changing environment. Example The evolution of the peppered moth in England is an example of natural selection at work. Before the Industrial Revolution, the light-colored moths were better able to blend in with the trees and lichens in their environment. However, as the trees became darkened by soot from factories, the light-colored moths became easier for birds to spot. Over time, the frequency of the darker-colored moths increased because they had a higher survival rate.