BIOL 1108- Midterm Exam Guide - Comprehensive Notes for the exam ( 12 pages long!)
Document Summary
Biol 1108 - lecture 6 - ch. 24 & 27: human origins and evolution of eukaryotes. We can place ourselves on the tree of life through: Comparative anatomy shoes human lineage branches from great apes. Primates separated into two types of species: old world (europe, asia, africa) and new. About 5-7 million years ago humans split from chimpanzees themselves. Modern humans evolved from same common ancestor as chimpanzees, but not chimps. Ardipithecus ramidus ardi is the most complete early hominin found. around 4. 4 mya. Our species can be proven, through phylogenetic analysis of mitochondrial dna and the y chromosome, to have arose in africa. Modern humans evolved parallel to each other out of different populations. Rebecca cann compared mitochondrial dna (mtdna) sequences. Mtdna is only inherited from your mother"s egg which thus from people all around the world and mapped out the patterns. there is no genetic recombination that occurs therefore sequence variation can only arise through mutation.