I am no geneticist but in layman's terms it seems like the Bigfoot or Sasquatch is a hybrid human that occurred when a human male variant mated with a homo sapiens woman over 15,000 years ago. Sort of like a zebra mating with a horse or a tiger with a lion. This is why apparently they are so smart and able to avoid detection so well. Scientific proof they exist once and for all other than the Patterson Gimlin film.
(No, this story did not come from "The Onion." It is legit.