Question

In a certain plant, rough seeds (R) are dominant and smooth seeds (r) are recessive. Two plants with genotype Rr are crossed. What genotype would give their offspring smooth seeds?

Answer 1

Genotype of smooth seeded offspring will be rr.

Explanation:

Plants with genotype Rr are heterozygous: they would express dominant character (in this case rough seeds). A crossing would yield progeny in 3:1 ratio, i.e. only 25% of the progeny (rr) will bear smooth seeds.