Unfortunately, the episode itself spends far too little time on this world view. It was, we are told, Wilson who first put forth the idea of "biological determinism" in human beings. That is, the notion that our genetic code helps make us who we are in ways outside of our physical appearance. The notion is terribly scary to some as it has, at times, been used to fuel the eugenics movement, but has since gained more traction. It is, essentially, at least in part, the "nature vs. nurture" debate.
It's a fascinating question, and one that certainly is applicable to everyone in the world. However, the episode doesn't mention it until nearly the midpoint and even then spends too little time on it, instead choosing to talk about termites and a natural equilibrium in number and size of animal groupings. It is possible that Wilson has spent more time studying these latter things which is why the episode spends more time on them, but it just isn't as gripping.
One of the best elements of this episode is the voiceover narrative, which is provided by none other than Harrison Ford. The words may be nothing terribly special, but the way he does have a wonderful way of speaking them that helps draw the viewer in to an otherwise bland episode. Additionally, the timing of the premiere of this episode makes one wonder if it was purposely schedule to coincide with Mr. Ford's huge theatrical film release later this week.
Nova - "Lord of the Ants" airs Tuesday, May 20 at 8pm ET/PT, but check your listings anyway because, heck, you can.