Due TONIGHT!!! 7 points!

In the pedigree shown the presence of a dominant autosomal genetic disorder is indicated by a shaded box. This is an autosomal inheritance not a sex-linked trait.

Part A determine whether or not either of the parents (1 or 2) could be homozygous for the trait in question. Explain your answer in a few sentences.

Part B “person 8 does not want to see the disorder passed on to his offspring. He does for certain want to get married and have children biologically. If you were a genetic counselor what advice would you give to him about his odds on having a child with the genetic disorder if he

A married a woman who is heterozygous for the condition and
B married a woman who does not have the genetic disorder.