<prompt> Which of the following enzymes is coded by X-chromosome?alpha-L-IduronidaseIduronate sulfataseb-GalactosidaseHyaluronidase  <response>: option b - Iduronate sulfatase is coded by X-chromosome Mucopolysaccharidoses Rare inborn errors in the degradation of glycosaminoglycans; Characterized by mental retardation andor skeletal abnormalities. Classified under lysosomal storage disorders. Hunter syndrome inherited - X-linked recessive mode deficiency of enzyme Iduronate sulfatase. All the other MPS are inherited in autosomal recessive mode. 