 The balanced translocation figure shows a 14/21 translocation between the long arms of chromosomes 14 and 21, where the other chromosomes are not shown.The individual has two copies of everything on chromosome 14, and two copies of all of the material on the long arm of chromosome 21 (21q).The derivative chromosome 21, which contains only heterochromatin, is lost; thus, the individual only has one copy of the material on the short arm of chromosome 21 (21p), but this appears to have no discernible effect.