Chapter 22
22.2 – descent with modification by natural selection explains the adaptation of organisms and the unity and diversity of life
22.3 – evolution is supported by an overwhelming amount of scientific evidence
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Chapter 23
23.1 – genetic variation makes evolution possible
23.2 – the Hardy-Weinberg equation can be used to test whether a population is evolving
23.3 – natural selection, genetic drift, and gene flow can alter allele frequencies in a population
23.4 – natural selection is the only mechanism that consistently causes adaptive evolution
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Chapter 24
24.1 – the biological species concept emphasizes reproductive isolation
24.2 – speciation can take place with or without geographic separation
24.3 – hybrid zones reveal factors that cause reproductive isolation
24.4 – speciation can occur rapidly or slowly and can result from changes in few or many genes
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