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Evolution Evidence

7AB

TermDefinition
Anatomical Homologies Similarities in structures among species that exist because of descent from a common ancestor
Ancestry The lineage of successive parents and offspring that leads to an organism or species
Biogeography The study of the past and present geographical distribution of species
Developmental homologies Similarities in the ways that organisms grow from zygotes to adults that exist because the organisms share a common ancestor
Evolution Descent with modification from a preexisting species
Fossil record The fossils and their locations in the sedimentary layers of Earth's crust, which provide information about things that lived in the distant past
Gradualism The theory that species evolve slowly and gradually over extended periods of time
Homologies Similarities between characteristics due to their origination from a common ancestor
Molecular homologies Similarities in DNA, RNA, or proteins between organisms that result from common ancestry
Punctuated Equilibrium A mode of evolution characterized by relatively short bursts of rapid evolutionary change interspersed with long periods of little change
Speciation The divergence of populations or subpopulations of the same species to the point where they can no longer interbreed and generate fertile offspring
Stasis A long period of time in which little or no change occurs within a species
Created by: cplummer76
 

 



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