saltatory evolution


Also found in: Dictionary.
Related to saltatory evolution: Saltationism, Saltationist

sal·ta·to·ry ev·o·lu·tion

the theory that evolution of a new species from an older one may occur as a large jump, such as a major repatterning of chromosomes, rather than by gradual accumulation of small steps or mutations. Compare: emergent evolution.

saltatory evolution

the appearance of a sudden change within a species, caused by mutation. The progression of a species by sudden major changes rather than by the gradual accumulation of minor changes. The phenomenon occurs predominantly in plants as a result of polyploidy. See also emergent evolution.

sal·ta·to·ry evo·lu·tion

(sal'tă-tōr-ē ev'ŏ-lū'shŭn)
The theory that evolution of a new species from an older one may occur as a large jump, such as a major repatterning of chromosomes, rather than by gradual accumulation of small steps or mutations.