GEDmatch explained 2
One-to-many matches
Once your DNA data has been "sync"ed, you're going to try one-to-many matches, to see who are related to. You have a choice of autosomal or X matches. Start with either, you'll do both eventually.
| Haplogroup | Autosomal | X chr | ||||||||||||||||
| Kit Nbr | Type | List | Select | Sex | Mt | Y | Details | Total cM | largest cM | Gen | Details | Total cM | largest cM | Name | ||||
  | | | | |  | | | | | |||||||||
| Axxxxx | F2 | L | M | U5A2b | A | 2973.7 | 263.7 | 1.1 | X | 108.8 | 70.5 | *DDJ | xxx@xxx | |||||
| Fxxxxx | F2 | L | U | A | 27.9 | 22.5 | 4.5 | X | 0 | 0 | AB | xxx@xxx | ||||||
| Mxxxxx | V3 | L | M | A | 27.9 | 22.5 | 4.5 | X | 0 | 0 | AB | xxx@xxx | ||||||
| Fxxxxxx | F2 | L | U | A | 27.3 | 15.9 | 4.5 | X | 0 | 0 | CD | xxx@xxx | ||||||
| Mxxxxx | V4 | L | M | A | 23.3 | 23.3 | 4.6 | X | 0 | 0 | KH | xxx@xxx | ||||||
| Mxxxxx | V3 | L | F | A | 26.1 | 18.9 | 4.6 | X | 0 | 0 | KT | xxx@xxx | ||||||
| Axxxxxx | F2 | L | F | A | 24.2 | 16.8 | 4.6 | X | 0 | 0 | MM | xxx@xxx | ||||||
This is the top of my "one-to-many" matches. The person I relate to the most, *DDJ, is my full brother. We are 1 generation from our common ancestors, mom & dad. GEDmatch assigns "1.1 gens" to us; sharing 45% of our DNA is within natural variation.
DDJ's mtDNA haplogroup is U5A2b (so is mine). Haplogroup testing is done at 23andMe, FTDNA, and other places. We did not have ours tested, but our maternal 1st cousin did. Our moms were sisters, so we have a direct maternal line.
On to the next match, AB. 4.5 generations back!! I look at his tree, and don't see the match. Same with the other 4 people here.
So I click on the "select" box for each, then on the next page select an option. I like "Chr browse", but you should eventually try all the options. "Segment CSV file" is very good for generating lists of where on what chr. the 'hard matching' (7 cM or over) segments are on.
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