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Unit 4: Evidence for Evolution

Terms in this set (10)

analogous structures
structures that do not have a common origin but are similar in function
homologous structures
Structures in different species that are similar because of common ancestry.
vestigial structures
A structure that is present in an organism but no longer serves its original purpose
Natural Selection
individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
Adaptation
A trait that helps an organism survive and reproduce
Speciation
Formation of new species
Variation
Any difference between individuals of the same species.
Population
group of individuals of the same species that live in the same area
Species
a group of living organisms consisting of similar individuals capable reproducing
Trait
A characteristic that an organism can pass on to its offspring through its genes.
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