It is known that brown-eyed dominates over blue-eyed. Determine the possibility of having blue-eyed

It is known that brown-eyed dominates over blue-eyed. Determine the possibility of having blue-eyed children in cases when: 1) One parent is heterosexual due to brown-eyed, the other with blue eyes. 2) Both are heterozygous for brown-eyed 3) One is homozygous for brown-eyed, the other with blue eyes.

We write the dominant eye color as D, and the recessive eye color as d. In the first case, the probability will be 50% of all possible children: Dd and dd (blue). In the second case, the probability of having children with blue eyes will be 25% of all possible offspring of the first generation: DD, Dd, dD, dd (blue color). In the third case, the probability of the appearance of blue-eyed children is zero, because all possible offspring will have only one variant of the genotype – Dd. So the appearance in the offspring of individuals with a recessive trait occurs when one or both parents are heterozygous.