BIO 311D Lecture Notes - Lecture 28: Natural Selection, Directional Selection, Heritability
Document Summary
Bio 311d, dr. donald levin, lecture #28, 5 april 2017 (all images are taken from dr. levin"s lecture slides, which are available on his website http://www. sbs. utexas. edu/levin/bio311d/) Review of last lecture: stigma and anther have different lengths spatial separation, pollen seed or reception on stigma timing separation. Before: pop 1 p=0. 6, q=0. 4; and pop 2 p=0. 3, q=0. 7; immigration rate 0. 2; native rate 1-0. 2=0. 8. Q doesn"t change for pop 2 because there"s no reason for it to go down. Gene flow: gene exchange/flow = migration. African-caucasian racial admixture in black americans in claxton, georgia: compare to claxton blacks to west african hotels, both black and white gene pools affected, whole genome is impacted; all of the gene pool, all alleles and loci. Some eastern europeans are affected by mongol genes from the past. Distribution of the fya allele among african and american black populations: interracial mating expected to go up,, no scenario for black alleles to go down.
