BIOL 1001 Chapter 8: Final exam chapter 8 notes
Document Summary
Biological species concept defines a species as a group organisms that can successfully interbreed and produce fertile offspring. The phylogenetic species concept defines a species as a group of organisms bowd by a unique ancestry. The ecological species concept defines a species as a group of organisms that share a distinct ecological niche. Hybridization: when 2 species interested and produce fertile offspring. A sexually producing population had a higher frequency of mutations mitochondrial protein loding genes then sexually reproducing populations. When geographically separated populations of a species exhibit dramatic, easily recognized phenotypic variation, biologists may identify them as different subspecies which all local variants of species. 18. 6a) ring species : genes flowing between some populations. Some plant and animal species have a ring. Shaped a geographic distribution that sussonds in a heritable trait. These so called ring species can exchange genetic material directly but gone flow between distant populations occurs only through intermediate populations.
