3-28 Vocab Review

Front

Define natural selection:

Back

Traits become more frequent in a population if they help an organism survive and reproduce.

Front

NOT an example of natural selection:

Back

People selectively breeding hamsters

Front

Define phenotype:

Back

Observable traits

Front

Genetic variation:

Back

Differences in DNA within a population.

Front

Define directional selection:

Back

An extreme phenotype is favored over other phenotypes.

Front

Define stabilizing selection:

Back

Intermediate forms of a trait are favored; extreme values are selected against.

Front

Disruptive selection: Extreme forms of a trait are favored over intermediate values, dividing the population into two distinct phenotypes.

Back

Extreme forms of a trait are favored over intermediate values and the population is divided into two distinct phenotypes.

Front

Define coevolution:

Back

The evolution of characteristics in two interacting species.

Front

Rock pocket mouse fur color results from:

Back

Disruptive selection

Front

Peppered moth coloration results from:

Back

Directional selection