Male guppies are known for their bright colors.Having bright colors attracts mates,but it also attracts predators.So in an environment with a lot of predators,male guppies have more dull colors.In an experiment,guppies were removed from an area with predators to an area without predators.Over a period of 12 months the population became much more colorful.This is an example of a response to:

Question

Quizplus · Accepted Answer

This is an example of directional selection because the trait (bright colors) was selected for and increased in frequency over time in response to a change in environmental conditions (the removal of predators). This is demonstrated by the fact that the population became much more colorful over the 12-month period.

Male Guppies Are Known for Their Bright Colors