Genetic counselling.
D002869:Chromosome Aberrations / Q000453:epidemiology; D025063:Chromosome Disorders; D003376:Counseling; D005053:Eugenics; D005260:Female; D005799:Genes, Dominant; D005808:Genes, Recessive; D030342:Genetic Diseases, Inborn / Q000453:epidemiology / Q000517:prevention & control*; D006801:Humans; D008297:Male; D011336:Probability; D012042:Registries; D012730:Sex Chromosomes