any variation that makes an organism better suited to it's environment.
Change in inherited characteristics over time
a process by which organisms with traits best suited to their environment most likely to survive and reproduce; includes concepts of variation, over production and competition
Inherited trait that makes an individual different from other members of the same species and results from a mutation in the organisms gene.
A group of organisms that share similar characteristics and can reproduce
model describing evolution as a slow process by which one species through a continuing series of mutations and variations over time
Model describing the rapid evolution that occurs when mutations of a few gene result in a species suddenly changing into a new species