Diseases caused by consanguineous marriages may be inherited. Consanguineous marriages primarily increase the chances of recessively inherited diseases. Biologically, human beings have two sets of chromosomes from the paternal and maternal lines, and recessive genetic diseases are those that develop when the corresponding loci on both sets of chromosomes have the same disease-causing gene. People in consanguineous marriages have a higher degree of chromosome similarity because they share a common ancestor. In the case of recessively inherited diseases, there is a definite possibility that their children and offspring will become pureblooded and thus exhibit the disease. This is the main cause of morbidity in the offspring. Due to the high probability of hereditary diseases in offspring caused by consanguineous marriages, the state prohibits marriages between direct blood relatives and collateral blood relatives up to the third generation.