BIO 102 Lecture Notes - Lecture 4: G. H. Hardy, Wilhelm Weinberg, Genotype Frequency
26 Sep 2016
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Population growth: populations have higher growths rates than their environment would support. Hidden truth of evolution is that most individuals and most species die. Without selective deaths all mutations that occurred would survive. Cladogram versions: normal cladogram of plants, cladograms of plants with widths proportional to the population size. The modern synthesis: variation is produced through mutations and (sexual) recombining of dna. Joining of darwin"s ideas of evolution with an understanding of genetics and dna known as. Modern synthesis: darwin: 1859, mendel: 1866, widespread genetics understanding: 1890-1900. Genetic equilibrium: frequencies of alleles and genotypes in a population don"t change from generation to generation unless influenced by outside factors. Population with no net change in allele or genotype frequencies over time is not undergoing evolutionary change is a genetic equilibrium. If allele frequencies do change over successive generations, evolution is occurring.
