| Satellite repeat |
| Minisatellite repeat |
| Variable Number Tandem Repeat |
| Simple Sequence Repeat: includes microsatellites |
| Indel: Insertion/deletion of short or long sequence |
| Transversion: Single Nucleotide Polymorphism |
Build 123 of dbSNP (30/10/04) contains data for 10,079,771 SNPs