BIOL 2081C Lecture Notes - Lecture 35: Homo Erectus, Coronary Artery Disease, Ancient Dna
Document Summary
Ancestor: types of amino acid changes in disease and evolution, behavioral changes due to an amino acid change, protein conservation, in the facts about human evolution video, hank discusses evidence for the out of. Africa hypothesis and briefly mentions some key genetic evidence that has led to this model being the popular accepted model of human evolution. What is this evidence: differentiate between a derived and an ancestral trait, using traits different between humans and chimpanzees. Evidence that humans are most closely related to chimpanzees: two main types of genetic evidence link humans and chimpanzees evolutionarily. (a) dna heat-denaturation depends on gc content (a cont. ) So-mismatched strands can be identified by lowered tm. Most protein-coding genes show only subtle differences between the two species. The average gene has acquired only two amino acid changes since the species diverged. About 30 percent of proteins are identical in humans and chimpanzees.
