Genotypes of gametes produced by an F1 individual?
Gamate is a haploid germ cell produced by either male or female parent. In your question,two homozygous dominant and recessive parants produce RY and ry gamates respectively. F1 would have four types of gamates if we think about their genotype.They should have any one of  RY, Ry, rY, ry as their genotype.
RY and ry are parental gamates. They have the genotype of the gamates that F1's homozygous parents produced. Other two are recombinant genotype. Since they behave independently, you can go with mendelian genetics and draw a punnett squre.write RY Ry rY ry horizontally and vertically then get the F2 cross genotypes. Dominant genotypes will determine the phenotype.