BIO 3102 Study Guide - Sperm Competition, Sexual Selection, Directional Selection

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14 Jul 2014
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Organisms of the same species separated by geographic areas and as a result unable to crossbreed because of geographic separation. Eventually this causes that lineage to speciate and isolation might occur because of great distance or physical barrier creating distinct characteristics in the species. Most common example is darwin"s finches on galapagos islands and their beak sizes and shape. Allopolyploid: an individual or strain whose chromosomes are composed of more than two genomes each of which has been derived more or less complete but possibly modified from one of two or more species. Hardy weinberg principle: a fundamental principle in population genetics stating that the genotype frequencies and gene frequencies of a large, randomly mating population remain constant provided immigration, mutation, and selection do not take place. Modern theory of evolution: is when mendelian genetics was consistent with natural selection and gradual evolution. The modern evolution synthesis (1942) proposed by julian huxley.