This evening after dinner, we noticed that both our girls twist their sandwich creme cookies* apart and eat each half separately, just like me, whereas Sarah eats them whole. I must conclude from this anecdotal evidence that the Twist-Sandwich-Creme-Cookies-Apart (TSCCA) gene is dominant whereas the Eat-Sandwich-Creme-Cookies-Whole (ESCCW) gene is recessive.
Thank goodness we have the crisp clear light of modern science to illuminate this murky curiosity.
* A.k.a. "Oreos". Except that these weren't actually Oreos. Though I must concede, "sandwich creme cookie" sounds a bit clumsy. I suppose it's one of those "Kleenex"/"tissue paper" things.