BIOL 304 Lecture Notes - Lecture 9: Total Variation, Stamen, Extinction Vortex
Document Summary
Maybe: inbreeding depression: inbreeding alone does not cause. Inbreeding depression: inbreeding depression is caused by expression of bad recessive alleles in homozygotes. A lesser cause is loss of heterozygote advantage: inbreeding depression is not caused by loss of genetic variability. The relationship between inbreeding and the extinction vortex. Inbreeding + inbreeding depression + small population size causes. Genetic drift to increase (from the inbreeding depression and small pop. Size: allele frequency change, loss of alleles (aka loss of diversity) These forces become positive feedbacks magnifying the effect of each. aka extinction vortex. Quantitative genetics - the branch of evolutionary biology that provides tools for analyzing the evolution of multilocus traits. Quantitative traits - characters with continuously distributed phenotypes. Quantitative traits are determine by the combined influence of the genotype at many different loci, and the environment. Quantitative trait loci (qtl) - portions of the genome that influence quantitative traits.
