Natural Selection Vocabulary and Main Ideas

Front

A trait that increases survival likelihood

Back

adaptive trait

Front

Related organism from a previous generation

Back

ancestor

Front

Hiding by resembling the background

Back

camouflage

Front

Number of individuals with each trait in a population (e.g., animals with long fur)

Back

distribution

Front

Everything living and nonliving surrounding an organism.

Back

Environment

Front

A group of individuals born and living at the same time

Back

generation

Front

A graph using bars to show distribution of traits in a group.

Back

histogram

Front

Process changing trait distribution in a population over generations

Back

natural selection

Front

A trait that reduces survival likelihood.

Back

NON adaptive trait

Front

Environmental factor affecting survival chances

Back

selection pressure