BICD 100 Lecture Notes - Lecture 2: Genetic Drift, Gene Flow, Sexual Selection
27 Sep 2016
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11. the way polypeptides bond together is slightly different. 12. sickle cell hemoglobin form long, inflexible chains which carry oxygen poorly evolution. 13. population: localized group of individuals capable of producing offspring. 14. gene pool: all alleles for all loci in population. 15. less human populations compared to 500 years ago because more migration and gene flow between populations. 16: variation in trait exists within population. 18: not all alleles equally passed to next generation. 19. evolution: change in frequency of alleles in a population. 20. in evolutionary terms, an organism"s fitness is measured by its contribution to the gene pool of the next generation natural selection: differential success in reproduction -> results in favored alleles increase in future generations -> adaptations. 21: genetic drift: based on random chance from small populations. 22: sexual selection: mating preferences; some traits more attractive than others. 23: mutation: origin of variation, adds to the gene pool.
