The genotype of a light blue-eyed person is?

It is well known that in humans, dark shades of hair and skin dominate over light ones, and the iris of the eye, colored brown, dominates over the iris of blue.

If we denote the gene for the development of dark hair (and skin tones) as K, then the gene for light hair and skin will be denoted as k.

Let’s designate the gene for brown eyes as L, then the gene for blue eyes will be l.

A light blue-eyed person will have a genotype that is dihomozygous for the genes of recessive traits – kkll, because the homozygosity of the genotype is a condition necessary for the realization of recessive traits in the phenotype of their owner.