I1S1O1C3H4R1O1M3O1S1O1M3E1S1
23 points
ISOCHROMOSOMES is validvalid
ISOCHROMOSOME, [n]
ISOCHROMOSOME, a chromosome produced by transverse splitting of the centromere so that both arms are from the same side of the centromere, are of equal length, and possess identical genes [n]