ANTH 1001 Chapter : Forces Of Evolution And The Formation Of Species
Document Summary
Forces of evolution and the formation of species. Evolution change over time: change in allele frequencies in a population from one generation to the next, macroevolution large scale changes that lead to new species/species level change, microevolution small scale changes. Evolutionary features: change in allele frequency, measured over generations, only concerns populations, microevolution vs. macroevolutions. The fat caa tet hew eer at. Inversion: original: the fat cat ate the wee rat. Anemia caused by mutation in the hemoglobin: homozygous dominant (aa) no anemia/death from malaria, heterozygous (aa) no or mild anemia/no malaria, homozygous recessive (aa) usually fatal, common in areas high incidence malaria. Speciation: reproductive isolating mechanisms rims, geographic, biological, social. Speciation tempo: tempo of evolutionary change, gradualism, punctuated equilibrium, ex. Interpreting species and other groups in the fossil record. Individual variation recombination provides each organism a unique combination of genetic material: age changes alter the overall body size and shape in many mammals, sexual dimorphism.
