BIO 181 Lecture Notes - Lecture 3: Natural Selection, Paleontology, Carl Linnaeus
7 Sep 2015
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Document Summary
Darwin"s origin of species: defined biological evolution as the theory of descent with modification through. In 1859, he published origin of species variation and natural selection : descent with modification: organisms related through descent from an ancestor, natural selection: a population can change over time if individuals that possess. Modern darwinism: microevolution: changes in a single gene in a population over time, macroevolution: the formation of new species or groups of related species, genetics terminology: Gene: organized sequences of dna that form a hereditary unit. Alleles: different forms of a particular gene (b = dominant; b = recessive) Genotype: the genetic composition of an organism: homozygous: two alleles of the same kind (bb, bb, heterozygous: two alleles of different kinds (bb) Gene pool: all of the genes present in a given population. 1: the relative likelihood that a genotype will contribute to the gene pool of the next generation as compared with other genotypes.
