As you get older, who you are gets written on your face.
Very true. And, as it turns out, part of what is written on your face is controlled by the epigenetic code.
Oh . . . My . . . God!
I'm in trouble.
Talk to anybody who's grown up with identical twins, and you'll find that the differences between them are evident from a very early age -- personality as well as physical characteristics.
Here's another one: for about 20% of identical twins, one is right-handed and the other is left-handed. (I knew a couple of guys in college who had this characteristic.)
Based on the number of Google hits, there's obviously a lot of interest in the differences between identical twins....