Generally darker colors are dominant over lighter colors.

Can someone have black hair and blue eyes. Generally however contrary to the opinion of many people having blue eyes is not the exclusive preserve of Asians or Europeans. Still blue eyes are very uncommon among black people especially those with no Caucasian ancestry. It has large amounts of eumelanin and is more dense than other hair colors.

This phenomenon the scattering of light by particles much smaller than the wavelength of radiation is. Only 1 to 2 percent of the population has red hair and only 17 percent have. First one can have blue eyes as a result of a genetic mutation.

In some places at times immigrants from Ireland have been called this term often in a derogatory manner. For example if you have one blue-eyed allele and one brown-eyed allele you will have brown eyes. Im not a cat.

That means knowing your ancestry can. Traits like blonde hair and blue eyes occur most often in European countries -- especially Northern Europe 23. The traits for both red hair and blue eyes are recessive so the chances of these two coming together are very rare.

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. Black Africans can also have blue eyes and there are many explanations for this. 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.

It is a dominant genetic trait and it is found in people of all backgrounds and ethnicities. Today estimates suggest about 17 percent of people worldwide have blue eyes. The non-dominant alleles are called recessive and they only present when a person has two of them.