UC Berkeley
Image Caption
End result: The more advantageous trait, brown coloration, which allows the beetle to have more offspring, becomes more common in the population. If this process continues, eventually, all individuals in the population will be brown.
Image use policy: For non-commercial, educational purposes, this image may be used with a Creative Commons CC BY-NC-SA 4.0 license. Please credit as follows: © University of California Museum of Paleontology, Understanding Evolution, www.understandingevolution.org
See where this image appears on the Understanding Evolution website »
To save: 1) Click on image for the full-size version, 2) right-click (Windows) or control-click (Mac) on the image, and 3) select "Save image."
This image is part of a series:
Natural selection (1 of 4) Variation
There is variation in traits. For example, some beetles are green and some are brown.
Natural selection (2 of 4) Differential reproduction
There is differential reproduction. Since the environment can't support unlimited population growth, not all individuals get to reproduce to their full potential. In this example, green beetles tend to get…