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evolution packet Cheat Sheet (DRAFT) by

This is a draft cheat sheet. It is a work in progress and is not finished yet.


Vestigial structures=Leftover parts of an organism that serves no purpose
Speciation=New species formed by sepera­tio­n/i­sol­ation
Analogous Structure=Same structure, different constr­uction
Evolution=change in the adaptive traits accumu­lated over successive genera­tions
Stabil­izing Selection=Average expression -> fittest
Direct­ional Selection=Extreme trait -> fittest
Bidire­ctional Selection=The extremes of two groups become more favorable

Evidence of Evolution

Direct Evidence
Fossils (Radio­active dating needed for accurate dating)
Indirect Evidence
-Compa­rative Embryology (Ontogeny Recapu­tates Phylogeny)
-Comparative Anatom­y(H­omo­logous & Vestigial Structures)
-Comparative bioche­mis­try(DNA & Protein Analysis)
-Geographic Distri­but­ion­(Is­ola­tio­n=g­enetic differ­ences)