Congenital defects of the person

In the people the split lip is called "cleft lip", and the split sky "a wolf mouth". During an era of the Middle Ages was considered that these children are more similar to animals for this reason unfortunate were subjected to persecution. Today the reason of defects is open. In 1991 the British scientists opened the gene responsible for development of the split sky. None of scientists doubted that the reason of formation of this congenital defect is covered in heredity. But in addition there has to be also some starting moment leading to development of such rough defect of the person. Without any doubt, smoking of the pregnant woman, her drinking habit and to drugs can become the reason of congenital pathology of the person.