in regard to the baby's color blindness, a sex-linked recessive trait, you explain that question 14 options: color blindness often appears randomly, even if neither parent is color-blind. the baby's father must have a recessive allele for color blindness. since color blindness is sex-linked, a son can inherit color blindness if his mother has the recessive color blindness allele. the eggs must have been accidentally switched, since males inherit sex-linked traits only from their fathers.