title: Stable dicentric autosome, tdic (8:22)(p23:p13), in a mentally retarded girl.
abstract: A dicentric autosome, tdic(8:22)(p23:p13), was found in all metaphase cells examined from the peripheral blood of a mentally retarded girl. It is suggested that the centromere of chromosome 22 was inactive, allowing the dicentric to behave as a monocentric element. The involvement of acrocentric chromosomes in the stable dicentric autosomes of man is discussed.
mesh_terms: D002648:Child; D002869:Chromosome Aberrations; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*