ANTH 1200 Study Guide - Midterm Guide: Premolar, Sub-Saharan Africa, Monomorphism
11 Mar 2016
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Document Summary
Modern evolutionary synthesis (julian huxlex 1942: union of ideas: natural selection, mendelian genetics, population genetics, and other evolutionary forces. Population & mendel"s principles of genetics are compatible with evolution. Evolution occurs by the accumulation of small genetic changes. Natural selection is dominant evolutionary force-works on variation in individuals" characters. Evolutionary studies of fossil record is what is observed within a species. Phylogenetic species concept (divergence of gene pool) Mule is product of male donkey and female horse. Prezyotic mechanisms: habitat isolation (similar species, different habitat, temporal isolation (mating at night, mating during day, recognition, behavioral (ie: mating dance in birds specific to species, physical (mechanical) incompatibility. Postzygotic mechanisms: sperm-egg incompatibility, zygote invariability, fetal invariability. Hinny is product of male horse & female donkey. Tempo of evolution: phyletic gradualism small steady changes over long person, punctuated equilibrium long periods of stasis & bursts of change. A & b are never sympatric: caldogenesis. Species a turns into species b & species c.
