GEDmatch explained 4
Chromosome X
Do your chromosome X matches like your other autosomal matches. Pay special attention to those that share autosomal DNA with you as well, even if its under 7 cM!!
Enter the autosomal DNA from an X match on that autosomal's spread sheet, even if its less than 7 cM.
This is a little shortcut for finding out what side of your family the match is on.
David's X matches:
Haplogroup
|
Autosomal
|
XDNA
|
||||||||||||||||
Kit Nbr
|
Sex
|
Mt
|
Y
|
Total cM
|
largest cM
|
Gen
|
Details
|
Total cM
|
largest cM
|
Name
|
||||||||
 |
|
|
|
|
|
|
 |
|
|
|||||||||
Axx
|
U5A2b
|
2973.7
|
263.7
|
1.1
|
108.8
|
70.5
|
Janice
|
|||||||||||
Fxx
|
F
|
0
|
0
|
10.2
|
10.2
|
MM
|
||||||||||||
Mxx
|
F
|
Hxx
|
0
|
0
|
9.1
|
9.1
|
GG
|
|||||||||||
Axx
|
F
|
6.7
|
6.7
|
7.5
|
8.8
|
8.8
|
CD
|
|||||||||||
Mxx
|
M
|
Hxx
|
Rx
|
5.4
|
5.4
|
7.7
|
8.6
|
8.6
|
JG
|
|||||||||
Mxx
|
M
|
Uxx
|
Ex
|
0
|
0
|
8.4
|
8.4
|
WR
|
||||||||||
Axx
|
U
|
0
|
0
|
8.4
|
8.4
|
XX
|
||||||||||||
Fxx
|
F
|
0
|
0
|
8.4
|
8.4
|
KL
|
||||||||||||
I took some of the information in the chart off so it would fit the page.
Notice that 3 people share autosomal as well as X DNA with David. Me (Janice),CD and JG. I ran the Chr browser tool, and put the autosomal DNA segments on the matching chromosome.
You can't really tell how distant an Xmatch is, because of it's pattern of inheritance. When it's in a man, it doesn't cross-over. You can have 10 generations of mother to daughter only, and in the same family 10 generations, with 5 fathers involved in passing down the X. The line with the fathers have fewer cross-overs, so the matching segments will be larger, all its still the same 10 generations.
The matches "GG" and "JG" happen to be brother and sister. David does not share autosomal DNA with GG, although he does with JG. They are both the same number of generations back though.
When someone comes along and matches to JG on the autosomal, I'll know he is from the same side of the family as JG.
ALL of David's X matches come from our mom's side of the family. They are a mix of the X chromosomes of our maternal grandparents.
Janice's Xmatches:
Haplogroup
|
Autosomal
|
Xdna
|
||||||||||||||||
Kit Nbr
|
Sex
|
Mt
|
Y
|
Total cM
|
largest cM
|
Gen
|
Details
|
Total cM
|
largest cM
|
Name
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|||||||||
Axxx
|
M
|
U5A2b
|
2973.7
|
263.7
|
1.1
|
108.8
|
70.5
|
*DDJ
|
||||||||||
Mxxx
|
F
|
Hx
|
0
|
0
|
19.2
|
19.2
|
HC
|
|||||||||||
Mxxx
|
M
|
Hx
|
Rxx
|
5.7
|
5.7
|
7.6
|
19.2
|
19.2
|
SD
|
|||||||||
Axxx
|
F
|
0
|
0
|
19.2
|
19.2
|
LP
|
||||||||||||
Fxxx
|
F
|
0
|
0
|
18.4
|
18.4
|
MA
|
||||||||||||
Axx
|
F
|
Lx
|
0
|
0
|
18.1
|
18.1
|
RV
|
|||||||||||
Mxx
|
F
|
Hx
|
0
|
0
|
18
|
18
|
ES
|
|||||||||||
some of them anyway. I have many more matches than David does, because I have 2 X chromosomes. About 25% of my Xmatches, I share with David.
I got a mix of my maternal grandparents on one X, and a mix of my paternal grandmother's parents (my great-grandparents) on the other.
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