The heterozygote of red/white flower color which was co-dominant would be?

Question

Need help

Answer 1

With codominance, a cross between organisms with two different phenotypes produces offspring with a third phenotype in which both of the parental traits appear together.

possibilities could be red with white markings or spots.

Answer 2

red and white

Answer 3

Since both alleles are expressed in co-dominance red and white will both be expressed and the resulting colour phenotype will be red /white as in roan cattle. (Link 2).

If you really mean that red and white are showing incomplete dominance (or partial dominance) then the phenotype will be pink. An excellent example of incomplete dominance are snapdragon flowers. When one crosses a red flowered snapdragon with a white flowered, all of the F1 generation have pink heterozygous flowers.(Link 1)