There are Few Conditions known to be common after Consanguineous marriages ...Please explain basis of this higher incidence of disorders....
Consanguineous marriage is the marriage between two person who are genetically related, by descent, from a common ancestor. However, such marriages are prohibited under Hindu Law. It is prohibited because such marriages leads to various disorders. These marriages lead to genetic disorders of the child who are born as a result of such marriages and this is the reason that such marriages are generally avoided.
Consanguineous marriage is marriage between persons having blood relation. Mostly the baby born out of such marital relation leads to deformity of the child and most commonly mentally retarded. Everyone of us have genes which are segments of varying lengths of a molecule called DNA. Each and every structure and function of the body is under the control of a pair of genes in most cases. Each human body cell carries nearly 50 to 100,000 of these genes, as pairs, usually a pair for each characteristic. Out of these about 4 to 8 are unwanted and faulty but as they are weak or recessive do not reveal the defect. The reason being that the other member of the pair is normal and powerful or dominant and thus suppresses the injurious effects of the faulty one. For any of those 4 - 8 genes to have an impact, they need to be in identical pairs, which means that each parent has to contribute one member of the pair. Thus the child being born out of baby born out of such marital relation leads to deformity of the child.
