BIOL 102 Lecture Notes - Lecture 17: Melanin, Mitochondrial Eve, Concanavalin A
Document Summary
Human evolution con : humans evolved in africa. Genetic analysis performed to con rm common ancestry. Mother with a mutation in her mtdna will pass it to all of her children. Trace back to one single female the mitochondrial eve . A group migrated to other countries: origin and dispersal of homo sapiens. Our species emerged out of africa in more than 1 wave. Oldest fossil found outside africa dated to 50,000 years. Time to teach and learn how to survive. Protection from parents: 3 lineages that account for genetic diversity, homo sapiens, neanderthals, denisovians. Not all current humans have denisovian dna. N and d were very specialized for very cold climates. Out competed by homo sapiens and our ability to adapt and make tools for the changing environment. Homo sapiens vastly out produced the other two hominid groups. Not changed a whole lot in the past 100,000 years.
