Years ago (I'm talking 20 years or so) I saw something on TV about the human genome project. The narrator was Asian so it might have been Michio Kaku. Anyway, I recall him having said that humans have all the genetic instructions needed to make all the other animals, while none of the other animals have all the instructions needed for a human. I took this to mean that you could sort through a human's genes and find all the instructions you needed to make an elephant or lizard or eagle. It seemed plausible at the time, but now I wonder the extent to which I misheard or misinterpreted it, because it strikes me as beyond far fetched to think I have elephant instructions in me.