Week 3-Human Genetic Evolution

We came from Africa originally, polynesians from mainland Asia, American Indians from Asia, but not people who exist now, more from Mongolians. It is pretty amazing that DNA is maternally inherited and we descended from one single female 2oo,000 yrs ago. And ALL of this started from prokaryotic cells 3.5 billion yrs ago in the atmosphere to our Homo line 200,000 years ago. A little hard to fathom... Pasteur refuting the theory of spontaneous generation and proving microorganisms are everywhere, even in air, we are still continuing to learn.