Evolution and Natural Selection Tutorial. Introduction Natural Selection Genetic Drift Quiz. In this tutorial, you will learn:. How natural selection provides a mechanism for evolution. Natural selection results from selective pressures in the environment and is not random.
Figures and images by N. Wheat unless otherwise noted.
Photo of Charles Darwin from Wikipedia.
Elephant seal photo from pdphoto.org.
Funded by Title V-STEM grant P031S090007.
Frequency CR = 0.5
Frequency CW = 0.5
Frequency CR = 1.0
Frequency CW = 0
Frequency CR = 0.7
Frequency CW = 0.3