Well, for all of us guys with colorblindness(me included), it's your mom's fault that you're colorblind. And you will pass the trait to all your daughters(but not sons).
Yes, Howlett. It is because it is located on one of the female cromosones kow as x). Because it is a weak trait, it will be dominated by the other x in a female, but a male only has that one x, and as the y is submissive, the trait will probably shine through.
Male w/o trait: X Y Female w/o trait: X X Those two would have children without the trait.
Male w trait: X1 Y Female w/o trait: X X Children: X1 X, X1 X, X Y, X Y. The girls will carry the trait, while nothing happens to the boys.
Male w/o tarit: X Y Female w trait: X1 X Children: X1 X, X X, X1 Y, X Y. One of the boys will have the trait, while one of the girls will carry it.
Male w trait: X1 Y Female w trait: X1 X Children: X1 X1, X1 X, X1 Y, X Y. One girl with trait, one boy with trait, one girl who carries the trait, a boy without the trait.
X1 Y X1 X1 : X1 X1, X1 X1, X1 Y, X1 Y. All colour blind, or at least with a high chance of being so (as genes can be weird). But would be a nice family without anyone being able to see the numbers?