7. If a red-flowered four o'clock plant is crossed with a white-flowered one, what will be the flower colour of the F1 crossed with its red parent; with its white parent?
8. How would you produce four o'clock seeds, all of which would yield pink-flowered plants when sown? NOTE: In Andalusian fowls, the heterozygous condition of the alleles for black (B) plunage and white (b) is blue.
9. What offsspring will a blue Andalusian fowl have if bred to birds of the following plumage colours: a) black, b) blue, c) white? NOTE: In poultry, rose comb is dominant over single comb.
10. A farmer believes that some of his rose-combed Wyandottte fowls may carry a factor for single comb. Can you suggest a method for finding out which fowls are heterozygous?​