I believe that this should be extended further. If you were born to naturally stay away from stuff, there is also stuff to make you angry, happy, and neutral. Makes me think of two things at least. Generations of alcoholics, and generations of people that over react when bees are around (this goes into being afraid of something of course).
Note, it's hard to say how much of it are genetics and how much parents teaching their descendants (consciously or not) their habits. Especially alcoholism can be "contagious", especially if the parents don't think that letting their children drink is wrong. Some even blatantly encourage that, at least in the Eastern Europe (drinking is a very social activity around here, often the primary one). Somewhat similarly, if parents are jumpy around bees, it seems logical that a child would register this behavior as correct and also overreact.
