BIOL 1070 Lecture Notes - Lecture 6: Meiosis, Base Pair, Mitosis
9 Apr 2019
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Document Summary
Change proximity of genes to each others and to regulatory regions. Duplicate all genes point mutation s chromos ome mutation s gene duplicati ons genome duplicati ons (polyploi dy) Extirpation, unlike extinction, may not be permanent if the species can be reintroduced to a former part of its nati. Genetic variation: differences at the dna level among individuals within a population or species. Genetic variation can change within populations in various ways: mutation, natural selection, genetic drift, and gene flow. The primary source of genetic variation is mutation. Mutations do not occur in order to benefit the organism. Name description cause signi cance point mutation s chromos ome mutation s. Chance errors during synthesis or repair of dna. Rearrangement or fusing of chromosome segments; alter gene order. Breaks dna caused by radiation or other factors. Change proximity of genes to each others and to regulatory regions gene duplicati ons. Duplication of a short stretch of dna, creating an additional copy.
