Please, respond, please, if from my father in a sort were...

[Tatyana]

Please, respond, please, if from my father in a sort were mentally retarded (its or his native brother, its or his cousin, the nephew). Umoej great-grandmothers from the father there were 4 children and at everyone either the son, or the grandson is sick. Whether it threatens my children?

[Kuznetsova E.A.]

You should address to genetics for specification of the diagnosis after that it will be possible to make the forecast for your posterity. For some forms of a hereditary pathology diagnostics from 8 9 weeks of an obstetric duration of gestation is possible or probable.