Suppose you examined a pedigree of a large family, going back 6 generations. in generation 5, a woman ("g5w") has a serious genetic disease--its first incidence in the family. in the next generation, three of her offspring--two boys and one girl--are affected, with one daughter unaffected. what is the most likely explanation?
(a) g5w's parent--the one who married into the family--carried the disease allele (but wasn't affected), and it is autosomal dominant.
(b) a mutation in one of the g5w's parents, during gamete formation, created an x-linked dominant disease allele.
(c) a mutation in g5w created an autosomal dominant disease allele.
(d) the disease allele is recessive and x-linked; g5w's spouse also has the allele.