Evolution Vocabulary

A change in the DNA sequence of an organism.

• evolution

• adaptation

• mutation

• variation

The difference between individuals from the same species.

• evolution

• adaptation

• mutation

• variation

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

• Geologic Time Scale

• species

• fossil

• natural selection

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

• survival of the fittest

• competition

• natural selection

• variation

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

• evolution

• mutation

• natural selection

• adaptation

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

• natural selection

• mutation

• evolution

• adaptation

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

• Geologic Time Scale

• fossil

• adaptation

• evolution

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.

• fossil

• evolution

• homologous structures

• adaptation

When species reproduce many more offspring than can possibly survive.

• competition

• overproduction

• adaptation

• mutation

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

• species

• natural selection

• overproduction

• variation