That was the point that I found most interesting too.
Bearing mind the timescales involved it makes you wonder how those who go for the 6,000 year old Earth or literal Adam & Eve stuff maintain their stance when it seems likely that many of us have a splash of other long-extinct human species in our DNA.
Tempted to check the cost of having the DNA test done myself to see just how much of a neanderthal I really am!
We watched it last night, on your recommendation, and found it very interesting. But did find it irritating that the woman presenter drew her timelines on the window, but seemed to have difficulty doing so!
As for Neanderthal DNA, I reckon some have more than others, like that guy Trump, 99.9% in his case!
I think the usual DNA tests for paternity are in the region of £600, but I could be wrong.