In humans, brown-eyed is the dominant feature. In the family, both parents are brown-eyed

In humans, brown-eyed is the dominant feature. In the family, both parents are brown-eyed, and their daughter has blue eyes. How many types of gametes does the mother have? How many different genotypes can there be among the children of these spouses?

Let A be a sign of brown eyes, then a is a sign of blue eyes.
If both parents are brown-eyed, and their child has blue eyes, then they are both heterozygotes for this gene, i.e. It contains both dominant and recessive genes, which are responsible for color glaz.Eto means that both the mother and the father will obrazovyvtsya gametes are of two types: A and B as well. Then, in such spouses, children can have three genotypes:
– homozygous for the dominant trait – AA;
– homozygous for a recessive trait – aa:
– heterozygous – Aa.