Hereditary disease is a kind of more intractable disease, although modern medicine has comparatived,develop, but hereditary to much disease or at the end of one's wits. The harm unlike flu of hereditary disease, like getting hurt, be brief, it is a kind long, accompanying generation generation person, to familial can cause an effect forever. 1, euchromosome dominance hereditary disease | | | This kind of hereditary disease basically can cause unborn occurrence skeleton the important pathology such as tumour of cell of depauperate, retinal mother, and its treat a disease gene is carried in constant coloring, no matter the boy, girl, still be the many children in generation, have the sicken probability of 50% , should not be so bear. 2, polygene hereditary disease | | | Polygene heredity, point to body blemish not only, wait like congenital heart disease, also put in the harm to mental respect, can cause a series of mental disease such as the schizophrenia. Here I need not wordy, believe a lot of friends can feel with experience. And, the probability of offspring of entail of this kind of disease all exceeds 10% , reason is unfavorable bear. 3, chromosome is ill | | | Human body has 23 pairs of chromosome, and the on 1000 gene that there is human body place to need on every chromosome, the square field surface of the human body development that they decide, to the person grow model have conclusive effect. Accordingly, chromosome disease is an influence to the person tremendous and cure very hard. Be like congenital the chromosome such as deaf-mute, albinism is ill, one party of husband and wife suffers from, very high probability sends children, if both sides of husband and wife contracts akin disease, the probability of their children sicken can achieve 100 ％ .