ACCTG 1 Lecture Notes - Lecture 14: African Wild Dog, Canis, Felis

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Chimps and bonobos are a clade (genus pan) Humans, chimps and bonobos together are a clade. All of these trees are exactly equivalent- they show that chimps and bonobos are each other"s closest relatives, then humans the closest to that, then gorillas more distantly related. topology (branching pattern) Draw a tree for domestic cat (felis catus), domestic dog (canis lupus familiaris), lion (panthera leo), african wild dog (lycaon pictus) You probably chose the group pairs of species together based on things they had in common. In tree-speak you found a shared character trait to justify each clade. This works best if the trait you use is a synapomorphy = shared derived character. Or a clustering algorithm where you grouped similar species together. All kinds of character traits can be used to build trees zoologists have already had a go at using morphological characters. These can still be used in tree building.

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