LIFESCI 7B Lecture 5: Speciation Outline
6 Aug 2018
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Document Summary
Biological species concept species are groups of actually. Potentially bc ex : elephants in diff continents are geographically separated so they"ll never mate. Morphospeoies concept members of same species usually lookalike cryptic species organisms originally considered as one species but turn out to be different after. Populations interbreed with each other so there"s gene flow around a ring of geography. Hybridization allows some theres to exchange genes with other species in their genera but they maintain their distinct appearances so natural selection. Ecological species concept there"s a l :l correspondence blw a species to its niche ecological niche the role a species. 2 species with similar niches are in same location they. Species concept members of a species all share a common ancestor and a common torte unclear bc doesn"t specify now tour back ancestor must be can be. Useful for a sexual species to see if they came from common ancestor.
