MAX POINTS

A man sues his wife for divorce on the grounds of infidelity. Both the man and his wife have normal eyes, but the woman bears a baby daughter with coloboma Iridis (a fissure in the eyes). This trait is a sex-linked recessive trait.

1. Can the man's lawyer use this as evidence? Why or why not? Explain. (He can, as it is a sex-linked trait. I already have this answered).
2. Does the woman's lawyer have a counter-argument? Why or why not? (???)