Question

which genetic condition results in the trait indicated by the blue color being expressed in the individuals shown here?
○ homozygous recessive
○ x - linked recessive
○ dominant
○ x - linked dominant

Explanation:

In a pedigree, if two unaffected parents (both \(Ff\) in this case, assuming \(F\) is dominant and \(f\) is recessive) have an affected child (showing the recessive trait), it follows the pattern of a recessive trait. Since both males and females can be affected (as seen in the pedigree) and it's not showing X - linked patterns (where, for example, in X - linked recessive, there is a more pronounced male - bias in some cases depending on parental genotypes), and for a dominant trait, at least one parent would be affected. A homozygous recessive condition (\(ff\)) is needed to express the recessive trait (blue - colored individuals).

Answer:

homozygous recessive