Aplant 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.

One of the parents' genotype must have been Pp and the other PP, so th answer would be B

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.