Irina always wanted to have freckles like her mother (dominant sign (A)). But she doesn’t have freckles like her dad.

Irina always wanted to have freckles like her mother (dominant sign (A)). But she doesn’t have freckles like her dad. Determine the genotypes of family members for the indicated trait.

Because the daughter (Irina) has no freckles, and the mother’s mother has – it means that the mother is heterozygous (Aa) by the sign, and the father – without freckles – aa.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.