Exam#2 Study Guide - Josh Eusebio Exam#2 Study Guide...

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Josh Eusebio Exam #2 Study Guide Chapter 24 Population geneticists – study of genes and genotypes in a population Ways a population may change from one generation to the next – natural selection, sexual selection, genetic drift, migration and non random mating Hardy Weinberg relate allele and genotype frequencies – *** HW Conditions– no new mutations, no natural selection, no migration, LAARGE population, random mating HW Equilibrium - **** No population fits HW, what is the purpose? - **** Microevolution – change in a population’s gene pool, such as changed in an allele frequency from generation to generation Macroevolution – evolutionary changes that create new species and groups of species Four sources of genetic variation – Random gene mutations, exon shuffling, gene duplications, horizontal gene transfer. Darwinian Fitness – relative likelihood that a genotype will contribute to the gene pool of the next generation as compared with other genotypes Various patterns of natural selection that lead to environment adaptation – directional selection (individuals at one extreme have a greater reproductive
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