試題詳解

29. In snapdragons, a cross between a red-flowered plant and a white-flowered plant produces a plant with pink flowers. What offspring would you expect from a cross between two pink-flowered plants?
(A) All pink
(B) 1/2 pink and 1/2 white
(C) 1/2 pink and 1/2 red
(D) 1/4 red, 1/2 pink, 1/4 white
(E) 1/4 pink, 1/2 red, 1/4 white