Question

What would be the genotype percent and phenotype percent of Rr x RR?

Answer 1

Here, R is dominant over r.
Now, RR × Rr cross, results in:
2 RR & 2 Rr

So, genotypic ratio = RR : Rr = 1:1
Phenotypic ratio = Dominant : Recessive = 1:0

Hope this helps!