Anyone who, downloads their raw data may then upload it to GEDmatch, where it will be allocated a ‘Kit Number’. GEDmatch will then generate a match list with others. The GEDmatch chromosone browser provies a table of matching chromosones and segments that may be pasted into DNA Painter. It is then possible to see exactly where, on which chromosome, the match occurs. Several people descending from a common ancestral couple will match on the same segment of the same chromosome.

If you find a surname interest match with someone whose DNA is on GEDmatch, you can immediately compare their kit with your own.