Question

1. A man with normal vision marries a woman with normal vision.Their first child, a boy, is color-blind.

i) (one point) Diagram the cross above.

ii) (one point) The couple have a second child, a girl, withnormal vision. This girl grows up and becomes pregnant with a childshe knows to be a boy. The father of this child has normal vision.What is the probability that this child will have red-green colorblindness? Diagram the cross.