Twofold CuZnSOD activity suggesting homozygous submicroscopic duplication of chromosome 21 in the orangutan
- PMID: 2969695
Twofold CuZnSOD activity suggesting homozygous submicroscopic duplication of chromosome 21 in the orangutan
Abstract
A twofold CuZnSOD activity was observed in an orangutan as compared to man and a chimpanzee. This suggests that a submicroscopic duplication of chromosome 21 (similar to those demonstrated in patients with the trisomy 21 phenotype but with a normal karyotype) has occurred in the homozygous state during evolution of the orangutan phylum. Such duplications could be important evolutionary mechanisms, together with visible chromosome rearrangements and classical gene mutations.