You are a genetic counselor. A family comes to your clinic concerned about a condition in their family tree. You draw their pedigree: Grandparents on the father's side — Grandfather is unaffected, Grandmother is unaffected. Their children: Father is unaffected, and Aunt Sofia is affected. The father married an unaffected woman (the mother). Their children: older sister is unaffected, younger brother is affected. The condition skips generations and both males and females can be affected. Using your knowledge of genetics, determine: (1) Is this condition dominant or recessive? (2) What are the likely genotypes of the father and mother? (3) What is the probability that the next child in this family will be affected?