How far back could modern humans breed?
In Eurasia, interbreeding between Neanderthals and Denisovans with modern humans took place several times. The introgression events into modern humans are estimated to have happened about 47,000–65,000 years ago with Neanderthals and about 44,000–54,000 years ago with Denisovans.
What came before human?
Humans are one type of several living species of great apes. Humans evolved alongside orangutans, chimpanzees, bonobos, and gorillas. All of these share a common ancestor before about 7 million years ago. Learn more about apes.
How far back do we have to go to determine autosomal inheritance?
Each generation we go back is expected to halve the amount of autosomal genetic material an ancestor gives to you. As this material inherited in chunks, we only have to go back ~9 generations until it is quite likely that a specific ancestor contributed zero of your autosomal material to you (see previous post ).
How far back can I expect to find genealogy records?
And how far back can I expect to find genealogy records? The earliest genealogical records are from China in 1500 B.C. European-based records go back to the 1500s for the general population, while nobility kept family records up to several centuries earlier.
How many generations back do you inherit from each ancestor?
To develop this a little more consider the fact that k generations back you have 2 (k-1) ancestors k generations back on (say) your mother’s side, you expect to inherit (22+33* (k-1))/2 (k-1) chunks from each ancestor.
How many ancestors are you descended from one person?
Each generation back your number of ancestors double, until you are descended from so many people (e.g. 20 generation back you potentially have 1 million ancestor) that it is. quite likely that some people back then are your ancestors multiple times over.