A blue-eyed myopic woman from a marriage with a brown-eyed man with normal vision gave birth

A blue-eyed myopic woman from a marriage with a brown-eyed man with normal vision gave birth to a brown-eyed myopic child. Is it possible to establish the genotype of the parents?

In this task, both of these signs will be recessive signs (there is, of course, one variant of myopia – the dominant one, but we can ignore this, since, classically, myopia is a recessive sign).
We write down the condition according to the accepted norms: parental individuals are designated as P (with gender specification, respectively, ♀ and), crossing – ×; offspring – F1, F2, F3, etc .; dominant characters are indicated in capital Latin letters, and recessive ones – in lowercase.
From here, we compose the task:
We write down the condition of the problem:
a – blue eye color
A – brown eye color
B – norm
b – myopia
♀ – aabb (has recessive features)
F1 – aabb
♂ -? (according to the condition, the father is most likely heterozygous, but definitely has dominant characteristics – we do not put these explanations in the condition)
Crossing scheme:
P ♀aabb × ♂? we obtain a descendant F1♂ with genotype aabb, respectively, the phenotype of the parents is G A a a B b b, hence we conclude:
P ♂ AaBb



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.