Evolution

A group whose members can interbreed

and produce fertile offspring

• species

• evolution

• gene flow

• natural selection

A change in the gene pool of a population due to chance

• speciation

• genetic drift

• mutation

• nonrandom mating

Change in allele frequencies as a result

of the migration of a small subgroup of a

population

• extinction

• endosymbiotic theory

• natural selection

• founder affect

Structures in different species that are

similar because of common ancestry.

• species

• homologous structures

• comparative anatomy

• vestigial structures

remnant of a structure that may have

had an important function in a species'

ancestors, but has no clear function in

the modern species.

• vestigial structure

• evolution

• nonrandom mating

• comparative embryology

movement of alleles from one population

to another due to migration

• genetic drift

• biogeography

• gene flow

• founder affect

Mating among individuals on the basis

of their phenotypic similarities or differences, rather than mating on a random basis

• nonrandom mating

• extinction

• biogeography

• natural selection

the study of the similarities and differences in the embryos of different species

• extinction

• mutation

• genetic drift

• comparative embryology

Study of past and present distribution of

organisms around the world

• bottleneck effect

• biogeography

• mutation

• comparative anatomy

A term that typically describes a species

that no longer has any known living individuals.

• extinction

• gene flow

• analogous structures

• evolution