BI111 Study Guide - Adaptive Radiation, Allopatric Speciation, Heterochrony
Document Summary
Vestigal structures: an anatomical feature of living organisms that no longer retains its function. Artificial selection: selective breeding of animals or plants to ensure that certain desirable traits appear at higher frequency in successive generations. Vicariance: the fragmentation of a continuous geographic distribution by non-biological factors. Endemic species: a species that occurs in only ones place on earth. Adaptive radiation (diversification): a cluster of closely related species that are each adaptively specialized to a specific habitat or food source. Allometric growth: a pattern of postembryonic development in which parts of the same organism grow at different rates. Pedomorphosis: a common form of heterochrony in which juvenile characteristics are retained in a reproductive adult.