Mother is a brunette; the father is blond, there were no brunettes in his pedigree.

Mother is a brunette; the father is blond, there were no brunettes in his pedigree. Three children were born: two blonde daughters and a brunette son. The gene for this trait is located in the autosome. Analyze the genotypes of offspring and parents.

M – brunette
m – blond
Р1: women. Mm * husband. mm
gametes: M m; m
F1: Mm (brunettes); mm (blondes)
Based on the conditions of the problem, the genotypes of the parental individuals: Mm – brunette mother, mm – blond father.
In the offspring, splitting occurs according to genotype and phenotype 1: 1.
50% will be with dark hair (mm); 50% with blond hair (mm).