From: After 'completion': the changing face of human chromosomes 21 and 22
 | Chromosome 21 (26 disorders) | Chromosome 22 (62 disorders) | ||||
---|---|---|---|---|---|---|
 | To December 1999 | From January 2000 | Pending | To December 1999 | From January 2000 | Pending |
Mapped to chromosome | 23 (88%) | 3 (12%) | 0 (0%) | 50 (81%) | 12 (19%) | 0 (0%) |
Mutation identified | 15 (58%) | 5 (19%) | 6 (23%) | 23 (37%) | 9 (15%) | 30 (48%) |
First gene sequence published | 22 (85%) | 0 (0%) | 4 (15%) | 42 (68%) | 6 (10%) | 14 (23%) |
Full-length cDNA published | 20 (77%) | 2 (8%) | 4 (15%) | 39 (63%) | 7 (11%) | 16 (26%) |