Question

a cross of two geraniums yields offspring that are 100% rr. which choice best represents the alleles of the parents?

○ rr and rr
○ rr and rr
○ rr and rr
○ rr and rr

Explanation:

When one parent has genotype RR (homozygous dominant) and the other has genotype rr (homozygous recessive), all offspring will have the genotype Rr. This is because the homozygous - dominant parent can only pass on the dominant allele R, and the homozygous - recessive parent can only pass on the recessive allele r.

Answer:

RR and rr