Your hair color and eye color come down to what genes you inherit from your parents.

Can someone have black hair and blue eyes. Irish people who have dark hair brown eyes and dark complexions are often referred to as Black Irish. The gene code that you carry is called your genotype. The non-dominant alleles are called recessive and they only present when a person has two of them.

There are even believed to be some people who are not of Irish descent who have used this term to refer to themselves in order to conceal their true ancestry. Not only are Europeans far more likely to have blue eyes 95 per cent in some Scandinavian countries they also have a far greater range of skin tones and hair colour than any other ethnic. As it goes through the stroma the presence of proteins causes blue light to scatter which makes the eye look blue.

Generally darker colors are dominant over lighter colors. Lactose tolerance is commonly associated with Europeans Central Asians and some African groups 5. Black hair is the darkest and most common of all human hair colors globally due to larger populations with this dominant trait.

Traits like straight black hair occur most often in Indigenous American and East Asian people 4. Brown hair black hair brown eyes are examples of dominant genes while red hair blonde blue and green eyes are recessive traits. Dark brown hair and blue eyes isnt rare.

Traits like blonde hair and blue eyes occur most often in European countries -- especially Northern Europe 23. First one can have blue eyes as a result of a genetic mutation. Black Africans can also have blue eyes and there are many explanations for this.

If one person has both red hair. Generally however contrary to the opinion of many people having blue eyes is not the exclusive preserve of Asians or Europeans. For one to have red hair and blue eyes the parents have to give them the MC1R recessive gene for red hair and the one for blue eyes.