A plant breeder is trying to develop more purple colored violets. She knows the purple violets she has can be PP or Pp for the purple color. She crosses two purple violets. Of the four plants that result, one is white and three are purple. What can she conclude about the parent plants?
One of the parents' genotype must have been Pp and the other pp.
One of the parents' genotype must have been Pp and the other PP.
Both of the parents' genotype must have been PP.
Both of the parents' genotype must have been Pp.
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