According to Batman: Arkham Assylum

[trickykitty]

Thomas and Martha Wayne both had brown eyes.

But Bruce Wayne had blue.

Comments

[whitetigergeek.livejournal.com]

uh oh, better check the mailman.....or Alfred ;)

[takhisis.livejournal.com]

hmmm, isn't it very remotely technically possible, according to the good ol' Punit square? They would both have to coincidentally carry the recessive gene, then Brucey coincidentally picked the winning number from both sides...

[lolotehe]

Badassery is a recessive gene?