Piebald spotting is a condition found in humans in which there are patches of skin that lack pigmentation. the condition results from the inability of pigment- producing cells to migrate properly during development. two adults with piebald spotting have one child who has this trait and a second child with normal skin pigmentation. a. is the piebald spotting trait dominant or recessive? what information led you to this answer? b. what are the genotypes of the parents?