What are “markers”?
DNA testing for Genetic Genealogy focuses on a specific part of the y-chromosome on the DNA strand. There are particular places that the lab looks at (similar to addresses on a street) where patterns repeat over and over. The lab counts the number of times the pattern repeats, and that is your count for that marker. By comparing these counts (the number you see for each address on your test results), you can see how closely you match others who have been tested.
Markers are for your own points of interest, to remind you of a special view or place. They’re visual cues that you can place on the map, but have no waypoint or other data attached to them. To add a marker to your map click the ‘Add marker’ icon on the black toolbar , then click the place on the map you want to add markers. Remember to de-activate the marker tool by clicking it again on the toolbar before you do anything else.
Related Questions
- Every time I search for STS markers in dbSNP, dbSNP returns a screen that says that no SNPs were found in my region of interest. What am I doing wrong?
- What is the meaning of the markers tagged with a Z letter identifier and number and where can I find information about these signs?
- What markers can I use for the Glowtastic!® U-Draw Light Kits?
