The question below involves what's called a dihybrid cross $($all your previous questions involved monohybrid crosses$).$ A dihybrid cross is where you follow alleles for $2$ different traits together $-$ in the example below one trait is represented by the letter $R($or $r)$ and the other by the letter $Y($or $y).$ So$,$ you need to show adults and offspring with $4$ letters $($RRYy$,$ for example$)$ to indicate a proper genotype; and the alleles passed on from each parent would be pairs of alleles $($for the RRYy individual in the example above, they could possibly pass on the combinations of RY$,$ or Ry to an individual offspring$).$

Question: In pea plants, seed shape and seed color are controlled by genes located on different chromosomes. Seeds may be round $($R$)$ or wrinkled $($r$),$ with the allele for round seeds being dominant. Alleles for seed color are yellow and green, with the green allele $(y)$ recessive to the yellow $(Y)$ allele. If you cross an individual that is homozygous round and yellow with an individual that is homozygous for wrinkled and green, what is the genotype of the offspring resulting from this mating? Provide both the cross and the resulting Punnett square.