A pea plant with yellow peas is crossed with a pea plant that has green peas. The offspring include ...

A pea plant with yellow peas is crossed with a pea plant that has green peas. The offspring include
  both yellow-pea and green-pea plants. The original plant with yellow peas must, therefore, have what
  genotype?
  A. YY
  B. Yy
  C. yy
  D. It cannot be determined: YY or Yy
  E. It cannot be determined: Yy or yy

Question 2

In the ABO multiple allele system, there are the following combinations of genotypes and phenotypes:A.
   4 genotypes, 4 phenotypes
  B. 4 genotypes, 6 phenotypes
  C. 6 genotypes, 6 phenotypes
  D. 6 genotypes, 4 phenotypes
  E. 3 genotypes, 4 phenotypes