Evolution (Intro List)

Biology

Evolution

Gradual change of allele frequencies in a population

Homologous structures

similar physical features in organisms that share a common ancestor, but the features serve completely different functions

Analogous structures

structures found in different organisms that are similar on the surface however the organisms have different ancestors

Vestigial structures

structures that are non-functional today, but once were functional

Extinction

the end of a species when the last individual of that species has died

Comparative embryology

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

Biogeography

Study of past and present distribution of organisms

Endosymbiotic theory

Explanation for the evolution of eukaryotic cells

Eukaryotic cells

Complex cells that have a nucleus enclosed within a membrane.

Prokaryotic cells

Simple cells that lack a nucleus and other membrane-bound organelles.