Natural Selection

Front

A random change in allele frequencies over generations brought about by chance.

Back

genetic drift

Front

Cockroaches becoming increasingly resistant to pesticides is an example of: disruptive selection, genetic drift, directional selection, stabilizing selection

Back

directional selection

Front

When allele frequencies change due to individuals leaving a population

Back

gene flow

Front

Microevolution happens in:

species

,

individuals

,

populations

,

households

Back

populations

Front

Natural selection requires ______________ to happen in a population.

Back

variation

Front

What is also required for natural selection to occur?

Back

Competition for resources

Front

Phenotypic forms at both ends of the range are favored and the intermediate forms are selected against.

Back

disruptive selection

Front

May result when heterozygotes are selected AGAINST.

Back

disruptive selection

Front

What type of selection is depicted in the picture where one phenotype is favored? Options: stabilizing, directional, disruptive

Back

directional

Front

What type of selection is shown in the image? Options: Stabilising, Directional, Disruptive

Back

Directional