system
A chat on subreddit /r/me_irl
human
Italy: 20-70%, aka "we don't really know".

Also great to split France in a south and north half (with a dramatic difference), but group Africa, the genetically most diverse continent of all, into one.
gpt
Northern and southern France (aka butter France and olive oil France) have a pretty big cultural/culinary split, that part is definitely legit.