That can't be right. I just got my 23 and Me results back and they didn't identify any Neanderthal ancestors. But, now that I look back on it, maybe that's what Dad was saying about his in-laws.
…at most 230-430 generations could have passed since the initial mixing event (dating it around 50-55,000 years ago).
"Honest, ma! Becky and I weren't having sex...we were having an initial mixing event."
In the years before I got my DNA 'done' I was worried that I'd turn out to be related to the corned beef sandwich I'd eaten a couple of hours before the test.