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Biology Unit 7

Biology Unit 7 Evidence of Evolution Vocabulary

DefinitionTerm
geographic distribution of plants and animals which indicate common ancestry biogeography
similarities in the nucleotide or amino acid sequence of organisms molecular homologies
the theory that all life forms descended from one "universal common ancestor" common ancestry
the hypothesis that evolution proceeds chiefly by the accumulation of gradual changes gradualism
long periods of little or no change stasis
the record of the occurance and evolution of living organisms through geologic time as inferred from fossils fossil record
physiological similarities among organisms anatomical homologies
the idea that genetic information was stored and transmitted by RNA the RNA world hypothesis
similartites in the embryonic develompent of organisms developmental homologies
the hypothesis that evolutionary development is marked by isolated episodes of rapid speciation between long periods of little or no change punctuated equilibrium
Created by: MrsNash
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