Sunday, 16 October 2011

Red Black Hair Color

Skin and hair color are determined by a pigment called melanin. There are two main types: eumelanin, which is brown-black, and phaeomelanin which is a sort of reddish brown. A person with red hair have a greater amount of pheomelanin than eumelanin.
The melanin in the skin contributes to tolerance of UV rays of the sun, but people with light skin lacks melanin rate necessary to prevent UV-induced DNA damage. Studies have shown that the alleles in red hair and freckles bed ability.It MC1R increase decrease was noted that Europeans who are heterozygous for red hair show increased sensitivity to UV.
The sun can be both good and bad for the health of a person and the different alleles of MC1R represent these adaptations. It was also shown that people with light skin are particularly sensitive to a number of skin cancer melanoma, basal cell carcinoma and squamous cell carcinoma.Due sensitivity of many were invited to wear red protection Sun
Parents have both a race and a mutated version of the MC1R gene they can be carriers and there is a probability of 1 / 4 of them with a child who has red hair.The characters and does not work that way. They are not dependent on what came before. This means that every child has a 25% chance of having red hair.