Obviously, there was no point in history in which the clade that developed into ‘humanity’ consisted of only one female individual. Yet
every mitochondrial genome in any current human population can be traced back to a single woman: ‘Mitochondrial Eve’. She lived between 100,000 and 200,000 years ago in sub-Saharan Africa. How can we all be matrilineally descended from one woman? Explain, with diagrams as necessary.