BIOLOGY 1M03 Lecture Notes - Lecture 18: Selective Sweep, Haplotype, Lactase
14 Jun 2020
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Document Summary
Lactase persistence: directional selection in populations with history of dairying, selective sweep allows molecular evidence of this. 10, 000 years depending on the size of the haplotype and generation time. Skin colour: skin colour and genetic similarity have little relation, skin colour does not re ect natural biological categories, skin colour follows north to south gradient, genetic similarity generally follows east to west gradient. Evolutionary psychology: application of evolutionary concepts to understand human behaviour, human cognitive abilities have been shaped in speci c ways by natural selection over 200, Human ancestry: genetic constraints limit or shape learning, our brains may be designed to solve the kinds of problems that our ancestors faced when they lived in small foraging bands, small cooperative bands: Talked, shared cultural beliefs, ideas and traditions. Natal dispersal in non-human animals: birds typically females disperse farther than males or both sexes shotgun disperse" after. Edging: mammals typically males disperse once reaching maturity (e. g. deer mice).
