As a geneticist with a focus on human genetics, I can explain the complexities of hair color inheritance. Hair color is a polygenic trait, which means it is influenced by multiple genes. The specific genes involved in determining hair color are primarily the MC1R gene and several others like HERC2, OCA2, and TYR, among others.

Brown-haired parents can indeed have a blonde child, but the probability of this happening depends on the combination of alleles they carry for the hair color genes. If both parents carry a recessive allele for blonde hair (which is less common in the population), there is a chance that they could pass on these recessive alleles to their child, resulting in a blonde-haired offspring.

Here's a simplified explanation of how it can happen:

1. Each person inherits two copies of each gene, one from each parent.
2. For hair color, the MC1R gene has a dominant allele (B) for brown and a recessive allele (b) for blonde.
3. If both parents have brown hair but are carriers of the recessive blonde allele (Bb), they can both pass on the recessive allele to their child.
4. If the child inherits the recessive allele from both parents (bb), they will have blonde hair.

It's important to note that other genes and environmental factors can also influence hair color, so the actual probability can be more complex.

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A dark haired parent and a light haired parent will often have a child with a color in between. Black + Blonde = Brown! So all in all the answer to your question is neither! Blonde hair, brown hair, blue eye, browns eyes ��none of those traits are dominant or recessive as they are not due to a single gene.read more >>