Evolution Vocabulary

A change in the DNA sequence of an organism.

The difference between individuals from the same species.

A representation of time based on the rock record of Earth. 

Short supplies of a resource that multiple organisms require, or between member of the same species. 

Any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.

The process through which populations of living organisms adapt and change. 

The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.

Organs with anatomical similarities, but performing different functions. The arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale.

When species reproduce many more offspring than can possibly survive.

A group of organisms that can reproduce with one another in nature and produce fertile offspring.