What's Going On Here?

It was a bit of a shock when my first kid came out with blond hair.

Now I'm equally befuddled by the fact that our second child is the polar opposite of the first.

For starters, Alice is a girl and Elliot is a boy (but in fairness, we knew that going in).

Elliot was born with wispy blond hair, which didn't really fill out until he was a year old.

Alice was born with a full head of dark hair.

Elliot's skin was pale-yellow (due in part to a mild case of jaundice).

Alice's complexion is a darker reddish hue. She almost resembles a Native-American papoose.

Elliot never took to breast feeding, despite our best efforts.

Alice is almost too much into breast feeding. She clamps on like a salt-water lamprey.

Elliot has big, round Obama ears.

Alice has pointed Spock ears.

Elliot has never cried once because of a full diaper. I'm pretty sure he could have a family of prairie dogs living down there and he wouldn't complain. (I even posited that the idea of babies crying about dirty diapers was a myth.)

Sure enough, Alice cries every time there's even trace amounts of anything in her diaper.

Are we sure these kids are related?