BIOL108 Lecture Notes - Lecture 35: Common Descent, Mutation Rate, Homo Heidelbergensis

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL108
• Professor: Lien Luong

Document Summary

Biol 108 - lecture #35 - primates pt. 6 million years of evolution: h. heidelbergensis. Neanderthals are thought to have evolved from them. H. sapiens may have evolved from this species 200 000 years ago. 2 schools of thought: multi-regional continuity hypothesis. H. ergaster/erectus left africa and dispersed into other portions of the old. Regional populations slowly evolved into modern humans. Some level of gene flow between geographically separated populations. So all living humans derive from the species h. erectus that left afrrica nearly 2 million years ago. Thus the emergence of h. sapiens was not restricted to any one area, but was a phenomenon that occurred throughout the entire geographic range where early humans h. erectus lived: out-of-africa: supported by mitochondrial dna evidence. H. sapiens migrated from africa into europe and asia. Replaced local homo populations which had arrived in previous waves of.