If a child has blonde hair and both of her parents have brown hair what does that tell you about the alle for blonde hair?

If a child has blonde hair while both parents have brown hair, it suggests that the blonde hair trait is likely recessive. This means that both parents must carry at least one recessive allele for blonde hair, even if they express the dominant brown hair phenotype. Therefore, the child could inherit one recessive allele from each parent, resulting in the expression of blonde hair.