In the following crosses write the characteristics of the progeny

a). RRYY x RRYY (round yellow x round yellow)

b). RrYy x RrYy (round yellow x round yellow)

c). rryy x rryy (wrinkled green x wrinkled green)

d). RRYY x rryy (round yellow x wrinkled green)

a). A cross between two pure breeding dominant parents gives pure breeding dominant progeny in F1 generation. All produced progeny will exhibit round and yellow with phenotype (RRYY).
b). A cross between two dihybrid dominant recessive parents, gives phenotypic ratio 9:3:3:1 in progeny. All progeny in this cross will exhibit round yellow (RRYY), Round yellow (RrYy), Round green (RRyy), Round green (Rryy), wrinkled yellow (rrYY), wrinkled yellow (rrYy), wrinkled green (rryy).
c). A cross between two pure breeding recessive parents gives pure breeding recessive progeny in F1 generation. All produced progeny will exhibit wrinkled green with phenotype (rryy).
d). A cross between pure breeding dominant and pure recessive parents, gives heterozygous dominant progeny. All progeny in the cross will have genotype RrYy and exhibit Round yellow.