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Ch. 18 key terms

evolution terms from openstax

TermDefinition
adaptation heritable trait or behavior in an organism that aids in its survival and reproduction in its present environment
homologous structures parallel structures in diverse organisms that have a common ancestor
hybrid offspring of two closely related individuals, not of the same species
natural selection reproduction of individuals with favorable genetic traits that survive environmental change because of those traits, leading to evolutionary change
speciation formation of a new species
species group of populations that interbreed and produce fertile offspring
variation genetic differences among individuals in a population
vestigial structure physical structure present in an organism but that has no apparent function and appears to be from a functional structure in a distant ancestor
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