In humans, the recessive allele that causes a form of red-green colour blindness (c) is found on the X chromosome. a) Determine the genotypes and phenotypes of the F1 generation from a colour-blind father and a mother who is homozygous for normal colour vision. b) Determine the genotypes and phenotypes of the F1 generation from a father who has a normal colour vision and a mother who is heterozygous for colour vision. c) Draw a Punnet square to determine the genotypes of parents that could produce a daughter who is colour-blind.