The idea of racial cellular memory is interesting, I've never really thought of it in terms of instincts, perhaps because I've heard a number of "past life memory=ancestral memory" sorts of theories that I dunno how to feel about. But like the instinctual reactions, like salmon knowing where to go to spawn etc... that's really interesting.

It is a tricky theory to test though. Hmm... An animal's personality and cleverness always come into play too. Nature likes to be unpredictable like that sometimes.