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Descent Modification

Bio IV Evo4

descent with modification species arise from earlier ancestors as each collects unique modifications over time
speciation formation of a new species when no longer can breed with related populations
fossil preserved evidence of organisms in rock formations
biogeography distribution of organisms on the planet
comparative anatomy comparing structures between different organisms
homologous trait traits that may have different functions, but inherited from a common ancestor; due to divergent evolution
analogous trait similar traits NOT inherited from a common ancestor; due to convergent evolution
vestigial trait homologous adaptation that is no longer useful in current forms
divergent evolution two related species splitting from a common ancestor; share homologous traits but becoming LESS similar over time
convergent evolution two unrelated species developing analogous traits as become more similar under similar environmental pressures
coevolution two species in a close relationship act as selection pressures on each other
extinction every member of a species has died
Created by: strawend



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