similar structure, different function- results from common ancestry

random change in allele frequencies in a population

Body parts that share a common function, but not structure

the formation of new and distinct species in the course of evolution.

information about past life, including the structure of organisms, and the order in which they lived

studying similarities between organisms in early developmental stages

movement of alleles from one population to another

Diagram that shows the evolutionary relationships among a group of organisms

Guide designed to identify organisms, using pairs of observable traits as checklist to pinpoint organisms

Any difference between individuals of the same species

Classification system in which each species is assigned a two-part scientific name

Group or level of organization into which organisms are classified:

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

The study of the distribution of species around the world

how well an organism can survive and reproduce in its environment