BIO120H1 Lecture Notes - Lecture 10: Carl Linnaeus, Binomial Nomenclature, Phenetics
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BIO120H1 Full Course Notes
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Document Summary
Binomial nomenclature (genetic and species name: to enable the interpretation of origins and evolutionary history. Phenetics: to construct a tree based in the characteristics of organisms but do not take evolutionary ancestry relationship into account. It use the overall resemblance to conclude relationship among organisms but it contradict with convergent evolution. Non-monophyletic group: derived from more than one form of ancestral form. Homoplasy: organisms are not genetically related but look similar. Adaptations that perform similar functional roles due to the shared ecology. Fish and dolphins are under different groups in animals but they have similar adaptations like fins as they live in the same ecology. Succulence and spiny growth forms in desert environments the spurge, milkweed and cactus family have the same structure adaptations derived from stressful desert environment which is the ability to store water. So it is rather invalid to group organisms only base on their overall resemblance.
