In humans, brown eye color dominates over blue. Determine the genotypes and phenotypes

In humans, brown eye color dominates over blue. Determine the genotypes and phenotypes of the offspring from the marriage of brown-eyed heterozygous parents.

Let’s designate the gene for brown eyes as H, and the gene for blue eyes as h.

Brown-eyed parents, according to the condition of the problem, are heterozygous. Let’s write their genotypes as Hh. Both parents will produce two types of germ cells: h and H.

Children who can be born to this pair of persons will have eyes:

brown color (heterozygotes Hh) – 50%;

blue (homozygotes hh) – 50%.