What does this mean? Genetics Mendel?

According to Mendel the alleles for one trait (seed shape) and the alleles for another trait (seed color) ort independently. In plants of the F1 generation produced by a cross between RRYY and rryy parents the genotype is RrYy. According to the principle of independent ortment, four different types of gametes will be produced in equal proportions by a cross of F1 plants. What are the genotypes of the different gametes produced by F1 plants? How many phenotypes are produced by a text cross of F1 plants?