Is Brown Hair Dominant

If you had a genotype that was aabb a being for brown hair a for blonde hair b for brown eyes b for blue.

Is brown hair dominant. For example being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. If you wear one of each only the jacket will be visible. From the above information it would be safe to include that the hair colors with more eumelanin present are dominant.

Rather than one or the other hair color is additive meaning the pigment melanin along with a variety of genes determines how dark your hair will be. It turns out that brown hair is dominant. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin people with brown hair are often referred to as brunette which in french is the feminine form of brunet the diminutive of brun brown brown haired or dark.

You can think of recessive alleles as t shirts and dominant ones as jackets. Dominant genes are genes that are expressed more readily than recessive genes i e. The brown hair gene is dominant over the blond hair gene as is brown eyes over blue.

The blond allele is recessive and gets covered up. The relationship between the two alleles affects which traits are expressed. Although hair color is dependant on dominant and recessive qualities predicting hair color is more complex than predicting other genetic traits.

Black and or brown haired individuals are the most common as compared to those with red or blonde hair. That means that even if only one of your two alleles is for brown hair your hair will be brown.