A man with a normal color of teeth, whose parents had darkened teeth, married a woman with darkened teeth

A man with a normal color of teeth, whose parents had darkened teeth, married a woman with darkened teeth, a father with darkened teeth and a mother with normal teeth. Determine the likelihood of having a child in the child’s family if the darkening is dominant.

M – darkening of teeth
m – normal teeth
Р1: women. Mm * husband. mm
gametes: M m; m
F1: Mm (darkened); mm (normal)
Based on the conditions of the problem, the genotypes of the parent individuals are: Mm – mother, mm – father.
In the offspring, genotype and phenotype 1: 1 splitting occurs.
50% will be with darkening of the teeth (mm); 50% with normal hair (mm).