Phylogenetics

Cladistic approach use minimum evolution and look at

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Unformatted text preview: A and B from C Parsimony criterion assumes that evolutionary changes are unlikely, so the explanation with the fewest changes is most likely. Cladistic approach: use minimum evolution and look at trees by what they group Rule: a group size is supposed to be 2 or greater So… a group size smaller than 2, uninformative characteristics ⇒ Need to know synapomorphy, symplesiomorphy, autapomorphy ⇒ ⇒ Arrived at the same character state because of same evolutionary mechanism ⇒ Overall function is the same ⇒ But there are slight differences Suggest natural selection when convergence occurs and there are no common ancestors Professor Wimp Subphylum crustacea Class hexapoda ⇒ Most numerous ⇒ Hemipteroid Beta di...
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