BI111 Study Guide - Midterm Guide: Plasmid, Photorespiration, Archaeplastida
Document Summary
Humans closest living ancestors are the bonobos and chimpanzees. Phylogeny: illustrates evolutionary ancestor relationships in a diagram: tells us about the evolutionary history of an organism and how closely or distantly it is related to other organisms. Lineages: group of species descended from a common ancestor. After isolation it is possible that that the two new populations can diverge in their gene frequencies as a result of natural selection or genetic drift. Branches: on the phylogeny, represent lineages of organisms. Tip: species of interest on the phylogeny. Nodes: indicate the place where branches split: represent hypothetical common ancestor. The node closest to the ancestor has the descendent that is more closely related. Evolution is progressive, moving toward some predetermined goal. Systematics: branch in biology concerned with the identification, classification and naming of earth"s biodiversity: study the relationship among taxonomic groups. In 1998 hiv and hepatitis c infections were reported over 400 children.
