title: Mental retardation, malformation syndrome andpartial 7p monosomy [45, XX, tdic (7;15) (p21;p11)].
abstract: A mentally retarded and malformed girl is described. Her karyotype was 45,XX,tdic (7;15) (p21;p11), i.e. she was monosomic for bands 7p22 and a part of 7p21. Only one of the two centromeres of the dicentric chromosome appeared to be functioning. The C-band positive material was retained by both centromeres (or adjacent to them). However, the Cd-band positive structure was absent in the presumably nonfunctioning centromere region.
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics*; D000782:Aneuploidy; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000235:genetics*; D012730:Sex Chromosomes