DEPARTMENT OF BIOLOGY
These two animations are meant to illustrate the principle that evolution proceeds by (1) mutation causing a new variation in some characteristic, followed by (2) individuals with that characteristic becoming more common in the population. This process occurs over and over, during many generations.
The animations also illustrate the principle that a single population, if split into sub-populations, can give rise to different species because the mutations that occur in one population may not occur in the other.
evolution: humans and chimpanzees transitional forms This is not a Flash animation, but illustrates the main misconception concerning transitional forms.
last updated: Aug. 17, 2010