BI111 Chapter Notes - Chapter 17: Disjunct Distribution, Evolutionary Developmental Biology, Continental Drift
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Simple organisms evolved into more complex ones moving up the ladder of life: lamarck theorized two mechanisms fostered evolutionary change, principle of use and disuse: body parts grow in proportion to how much. Darwin"s observations and inferences about evolution by means of natural. Most organuisms produce more than one or two offspring. Individuals with populations exhibit variability in many characteristics. Many variations have a genetic basis that is inherited by subsequent generations. Individuals within a population compete for limited resources. Hereditary characteristics may allow some individuals to survive longer and reproduce more than others. 17. 6 interpreting evolutionary lineages: march inferred a pattern of descent characterized by gradual, directional evolution in several skeletal features. Changes in legs allowed horses to run faster, changes in face and teeth accompanied a switch from leaves to grasses. Marginal populations experience substantial genetic drift and distinctive patterns of natural selection.
