Hair Color Genetics Inheritance

Like all physical traitson your body your hair colour is also determined by the internal genetic make up or your cells.

Hair color genetics inheritance. Hair color is inherited and many genes are involved in the process. The Genetics of Our Natural Hair color MC1R is the best-studied hair color gene in humans. This heredity calculator uses simplified models to calculate traits and its certainty is far from 100 due to the fact that human genetics is far more complex than a simple mendelian dominantrecessive model.

Generally if more melanin is present the color of the hair is darker. Hormones can change the way that genes work which often causes blond hair to get darker as children get older. Genetics influences hair color such as.

Stress sunlight smoking and eating poorly can also cause hair color to fade. Black hair contains the most eumelanin granules therefore making them more tightly packed. The tone of the hair is dependent on the ratio of black or brown eumelanin to yellow or red pheomelanin.

Red hair ginger Blond hair Gray hair Brown hair. By LunaDNA Contributor Hair colors are passed down through generations. The most studied gene that determines hair color in humans is called MC1R.

Most people have two functioning copies of the MC1R gene one inherited from each parent. Red hair color is not an example of a simple genetic trait. This gene provides instructions for the manufacture of a protein called melanocortin receptor type 1 which is involved in the creation of melanin.

Levels of melanin can vary over time causing a persons hair color to change and it is possible to have hair follicles of more than one color. It is estimated that more than 90 percent of people in the world have brown or black hair. The color of the hair depends on the amount and type of melanin produced by melanocytes.