BISC 1112 Chapter Notes - Chapter 26: Horizontal Gene Transfer, Olfactory Receptor, Gene Duplication
31 Mar 2017
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Pattern of evolution: observations of evolution"s products over time. Phylogeny: evolutionary history of a species or of a group of species. Systematics: discipline focused on classifying organisms and determining their evolutionary relationships. An organism is likely to share many of its genes, metabolic pathways, and structural proteins with its close relatives. Taxonomy: scientific discipline concerned with the naming and classification of organisms. Phylogenetic tree: branching diagram that shows the evolutionary history of a group of organisms. Branch point: represents the divergence of two evolutionary lineages from a common ancestor. Sister taxa: groups of organisms that share an immediate common ancestor; each other"s closest relative. Rooted tree: a branch point within the tree (often drawn farthest to the left) represents the most recent common ancestor of all the taxa in the tree. Basal taxon: a lineage that diverges early in the history of a group and hence, lies on a branch that originates near the common ancestor of the group.
