Question

A scientist crossed two pea plants, both having the genotype RrYy. The Punnett square representing the cross is shown in the table. The scientist concluded that all of the offspring would have at least one dominant allele for either shape or color. What can be said about his conclusion?

Answer 1

Parental genotypes: RrYy x RrYy
Offspring genotypes: RRYY, RRYy, RRyy, RrYY, RRyy, rrYY, rrYy, rryy

The conclusion is incorrect because there is a chance that the offspring may have the genotype rryy, in which it has no dominant alleles. 

Answer 2

Answer:

D.) The conclusion is incorrect as one of the offsprings has only recessive alleles.