a). What is the difference between a rooted phylogenetic tree and an unrooted phylogenetic tree? b). In the phylogenetic tree below, which taxon is the outgroup? Hylobatidae (gibbons) Ponginae Pongo (orangutans) Pongo abelii Pongo tapanuliensis Pongo pygmaeus Hominoidea (hominoids, apes) Hominidae (hominids, great apes) Gorillini Gorilla (gorillas) Gorilla gorilla Gorilla beringei Homininae (hominines) Hominini (hominins) Panina Pan (chimpanzees) Pan troglodytes Pan paniscus Hominina (homininans) Homo (humans) The difference between a rooted phylogenetic
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The branching order in a rooted tree represents the evolutionary relationships among the taxa, with each branch point (node) representing a hypothetical common ancestor. In contrast, an unrooted phylogenetic tree does not have a designated root, and it only shows Show more…
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A phylogenetic tree that is "rooted" is one (b) at whose base is located the common ancestor of all taxa depicted on that tree.
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