Course review
Review each learning objective in this topic, then open its concept explanation or question set.
Learning objective
• Evolution is cumulative change in heritable characteristics of a population • Acquired characteristics are not inherited in the Darwinian sense
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Learning objective
• Universal DNA, genetic code, ATP use, and core metabolism support common ancestry • DNA, RNA, and protein sequence differences indicate relatedness and divergence
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Learning objective
• Selective breeding shows traits can change rapidly under selection • Examples include pigeons, domesticated animals, Brassica crops, wheat, and maize
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Learning objective
• Homologous structures share ancestry even when functions differ • Vertebrate pentadactyl limbs support divergent evolution and adaptive radiation
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Learning objective
• Analogous structures have similar functions but different evolutionary origins • Similar selection pressures can produce convergence, such as bat and insect wings
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Learning objective
• Speciation forms new species by splitting a pre-existing species • Isolated gene pools diverge through selection, mutation, and genetic drift
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Learning objective
• Reproductive isolation reduces gene flow so populations can diverge • Geographic separation and different selection pressures can drive speciation • Chimpanzees and bonobos illustrate river-linked isolation and divergence
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