Multiple choice

Genetic change in response to an environmental stress typically takes place if the stress is

  1. severe and constant through out many generations

  2. mild and constant through out many generations

  3. very severe and short-term

  4. very severe and long-term

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Natural selection is most likely to result in the genetic change of a population when a stress is severe, constant and long term. Selection usually will favour the successful adaptation resulting in its increased frequency in subsequent generations.

Keep practicing — related questions