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Unformatted text preview: sub sepecies, slight but not disticnt change descent with modification DWM - NS - extinction as a way to understand diveristy and fossil rcord tree of life, 3 domains: archaea, bacteria, eukarya evolution is not progression, thsi is tree of life, showing advance in evidence: fossils morphology molecular hope for rescent fossils mosst information comes from current species fossils -> morphology -> ancestors general principles: systematics-taxa ; genral family orders - monophyletic (root is one common ancestor)- group by shared derived traits paraphylatic ; where we dont have teh same ancestor polyphyletic: marsupial rats trait variatives - model of sequence evol. infer teh most probable polygenetics huelsenbeck infer something about time but we ned fossils to do it....
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- Spring '07