CH 2200 Lecture 10: Chinese common words 56

1. A man with normal vision marries a woman with normal vision.Their first child, a boy, is color-blind. i) (one point) Diagramthe cross above.

ii) The couple have a second child, a girl, with normal vision.This girl grows up and becomes pregnant with a child she knows tobe a boy. The father of this child has normal vision. What is theprobability that this child will have red-green color blindness?Diagram the cross.

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.

If an unaffected woman mates with an unaffected man, and theyhave 3 children with hemophilia, and one child who isunaffected,

9) What are the chances that the couple will have a child withhemophilia?
10) What are the chances that the couple will have a boy who hashemophilia?
11) What are the chances that the couple will have a girl who doesnot have hemophilia?