In the cross TtYYRr x ttYYrr, what proportion of the offspring would be expected to be tall plants with round, yellow seeds? For the purpose of this problem, assume that in humans the gene for brown eyes is dominant to that for blue eyes. A brown-eyed man marries a blue-eyed woman, and they have eight brown-eyed children. What are the genotypes of all the individuals in the family? What is the probability that the first child produced in parents who are both heterozygous for brown eyes will be blue-eyed? If the first child is a brown-eyed girl (same parents as in b), what is the probability that the second child will be a blue-eyed boy?