Causes of rate black and white twins

Black and white twins was likely growth trend, some experts even predicted that with a pair of different color will become commonplace twins Edinburgh University population geneticist Jim - Dr Wilson said: "pure white race can not be two give birth to a black and white twins, two pure blood Africans, too. "If a person both of African descent, there are white European descent, his children to predict what color will be impossible. Wilson said: "As parents each contribute 50% of the genes, the couple's first generation hybrid between white and black color is clearly between the second generation of the situation is different if their descendants and white combination, since there is no half for half of the white color and black color variations, white skin, they gave birth to the child's potential is there if both husband and wife is a half-breed, a white, white skin, they can not give birth to a baby present, the proportion of hybrid one-tenth, which means black and white twins phenomenon will become more common. "Wilson said:" The skin and eye color are known to control genes, there are about 20 and you are present for each gene variant light and dark skin color variation, If the DNA in the dark color variation more natural skin dim; light color variation if more are born with lighter skin. "We have inherited from grandparents a variable number of DNA, four of the skin if they are different , the number of future generations inherit a specific gene affects not only the color, but also affect other characteristics. Wilson said: "You will also have African hair and fair skin, which is a very striking phenomenon, but also very rare, of course, you may give birth to a black skin and long hair of the child with the Europeans, the Health the black skin and blue eyes also exist the possibility of the baby. "