ANTH 2301 Lecture Notes - Lecture 4: Turner Syndrome, Glutamic Acid, Genetic Drift
7 Feb 2017
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Document Summary
There is a table in text book for codes/sequences. Mechanisms of evolution: mutation, gene flow, natural selection, genetic drift. Mutations rare, usually harmful, they are mistakes: point mutation: single base substitution. Gug = valine = hb^s: frameshift additions or deletions, sex-linked traits (x) Gene flow: the movement of genes between populations, migration a---b, hybridization a+b=c, exogamy you marry outside of your group. Endogamy can lead to inbreeding which makes harmful genes more likely. Nonrandom mating to emerge: positive assertive mating, negative assertive mating. Natural selection on average certain genotypes have a better chance of surviving and reproducing than other genotypes. Whether or not you survive: differential fertility whether or not you mate/ copulate. Selection: natural or artificial, variation, environment interacts differently with phenotypes, genetic, fitness: mortality: reproduction. Certain traits become fixed in the population. The founder effect the founding population was not representative of the whole population that they came from.
