title: Racial differences in the frequency of Q and C chromosomal heteromorphisms.
mesh_terms: D044383:Black People; D002648:Child; D007446:Chromosome Inversion; D002875:Chromosomes / Q000648:ultrastructure*; D002900:Chromosomes, Human, 1-3; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007360:Intelligence; D007621:Karyotyping; D008214:Lymphocytes / Q000648:ultrastructure; D008297:Male; D011110:Polymorphism, Genetic; D013194:Staining and Labeling; D044465:White People