|If you share a block in the same location with several matches you likely share a common ancestor. This is true even if the blocks overlap each other.|
- The longest block. The longer the block the more likely you are to be related.
- Shared cM. The higher this number the more likely your relationship is recent (closer cousin) a lower number could mean your match shares a more distant relationship with you (more distant cousin).
- The Chromo Browser setting number relates to the size of the shared block. The higher the number you set it to the larger segment will be for comparison to one or more matches. You may share many smaller segments of DNA with someone also, so you can set the browser to show segments as low as 1 cM.