If a blue-eyed man marries a blue-eyed woman would the child have blue eyes?
It depends on whether either of them is carrying a brown eye
trait. If so, their children will have brown eyes. If not, blue
eyes are recissive so it will also depend on whether they are
heterozigous blue or homozigous blue, if hetero- it is a 50-50
chance, if homo- their child will have blue eyes.