| A | B |
|---|
| The evolution of an ancestral species into an array of species that occupy diverse habitats | adaptive radiation |
| Any structure that is reduced in function in a living organism but may have been used in an ancestor | vestigial |
| The concept that evolution occurs over long periods of stability that are interrupted by geologically brief periods of change | punctuated equlibrium |
| A mechanism for change in a population in which organisms with favorable variations live, reproduce, and pass on their favorable traits | natural selection |
| The alteration of allelic frequencies by random chance | genetic drift |
| The total number of genes present in a population | gene pool |
| A variety of structural adaptations that provide protection for an organism by copying the appearance of another species | mimicry |
| A structural adaptation enabling an organism to blend in with its environment | camouflage |
| A techique in which the breeder selects particular traits | artificial selection |
| Pattern of evolution in which two species become more and more dissimilar | divergent |
| A type of reproductive isolation in which two organisms have different mating rituals that prevent them from interbreeding | behavioral isolation |
| Type of reproductive isolation in which two populations are separated by geographic barriers like mountains or bodies of water | geographic isolation |
| Type of reproductive isolation in which two organisms reproduce at different times | temporal isolation |
