BIOL 2040 Lecture Notes - Lecture 16: Greenish Warbler, Ring Species, Parallel Evolution
9 Apr 2016
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Document Summary
Predicts convergent evoluion: x should repeatedly evolve in muliple lineages/species when in environment y, regardless of lack of common ancestor. Fin-shaped limbs and adaptaion to aquaic environment predicion that ins have evolved muliple imes in lineages that switch to aquaic habitats. Not homology: similarity is functionally necessary. Body form of aquaic predators: not inherited from a common ancestor, convergent evoluion. Homoplasy: similarity that is not due to common descent. A confounded correlaion: are large testes an adaptaion to large social groups in bats. Living in smaller groups with less compeiion for mates. Living in larger groups creates more reproducive compeiion. Correlaion exists between social group size and testes size but correlaion isn"t due to a funcional relaionship: decrease in testes size occurs in one evoluionary branch, increase in group size occurs in another, phylogeneically independent contrasts. Node s is equal to the average of sister taxa m and n. Diference in p and q large testes, large groups.
