In tomatoes, two alleles of one locus determine the character difference of purple versus green stems (alleles are P and p with P being completely dominatn and coding for purple stems) and two alleles of a seperate independent locus determine the character difference of "cut" versus "potato" leaves (allleles are C and c with C being completely dominatn and coding for cute leaves)
Assuming independent assortment, what are the expected phenotypic proportions from the following crosses:
a.) PPCC x ppcc
b.) PpCc x PpCc
c.) PpCC x PpCC