Week 2 Day 2 Genome Chapter 2 Summary: Species

In this chapter for Genome, Ridley began with the introduction of how people used to mistaken that a human genome has 24 chromosomes.  However, more well developed studies show that human has only have 23 chromosomes because Chromosome 2 is slightly modified by fusing two ape chromosomes.  There are some religious figures believe that the human soul is somewhere near the centromere of Chromosome 2.  Many people believe that human are an ecological success because we are able to occupy 300 million tons of biomass.  However, the human and chimps genetics are 98% the same.  There must be some point in time that the split occur when a chimpanzee population "isolated" and developed a genetic mutation that prevented the two population from breeding and forming a new species.  Monogamy shaped our "division of labor".  Ridley concluded by saying that the differences between species are in the genes but genes do not totally control behavior.