In hydrangeas, color shows codominance. When a hydrangea has both the allele for lilac petals (L) and the allele for blue petals (B), its petals will be lilac & blue (LB). If you were to cross a lilac & blue hydrangea with a blue hydrangea, what would the parental cross look like?
Ll x LL
LL x BB
LB x BB
Ll x l