NEED HELP!!!
In a certain species of plant, flowers can be purple or white. When a plant with white flowers (P 1) is crossed with a plant with purple flowers (P 2), all offspring have purple flowers (F 1).


a. Determine which trait is dominant and recessive, and prove it with a Punnett square.


b. Show a Punnet square for a cross that allows F 1 to self-pllinate.