Biology 1001A Lecture Notes - Lecture 16: Zebroid, Macroevolution, Ring Species
24 Aug 2013
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16: species and speciation (monday, november 7, 2011) Microevolution describes the changes in allele frequency from generation to generation. Macroevolution describes the creation of new species from generation to generation. Species can be identified, determined, distinguished, and overall, defined using either the. Morphological species concept (msc), biological species concept (bsc), and/or the phylogenetic. Three processes from which speciation may occur include: isolation (reproductive segregation of species population), convergence (similarities which have arisen independently in two or more organisms that are not closely related), and secondary contact (determines degree of divergence). It is essential for the purpose of conserving certain species that endangered or close to extinction. E. g. forest-dwelling indian elephants are distinct than savannah dwelling african elephants in social structure and require different necessities form the environment in which they inhabit. Msc is the method of identifying species by similarity in traits of individuals of the studied population.
