Dessert Stomach

My daughters have found the answer to a decades long riddle of genetics that we thought was peculiar to our family. Apparently not.
My Eldest daughter Teal wrote to her little sister Cadienne:
Who knew all those years ago Cad, as a little munchkin when you tried to convince us at the dinner table that your dinner stomach was full but your dessert stomach was empty that you had Science to back you up?!!!! 😉 ?