Patterns of evolution

A process of natural selection that favours phenotypes at one extreme of the phenotypic range.

Theory that evolution proceeds at a steady pace, without the sudden development of new species.

A process of natural selection that favours individuals at both extremes of a phenotypic range.

Evolution resulting from small specific genetic changes that can lead to a new subspecies.

Any cause that reduces reproductive success in a proportion of a population.

Having more than the usual number of complete sets of chromosomes.

Local population of organisms of one species, interbreeding, sharing a distinct gene pool.

Theory that evolution proceeds with long periods of stasis followed by rapid change in species.

Evolution on large scale, over geologic era, leading to the formation of new taxonomic groups.

A process that favors genotypic combinations producing an intermediate phenotype