Haplogroup R1b is discussed in a Wikipedia article.

Early in this project this subgroup was named Eastern because at the time only the Eastern Modal Haplotypes had DYS393=12 in the set of R1b Modal Haplotypesdefined by Nordtvedt. Since then a considerable body of data has emerged with DYS393=12 in R-M269, for examples see the R L513 and Subclades project. This subgroup has been renamed because it could fit into some other cluster with DYS393=12. It is called Attymass because the participants herein who can trace ancestors to a specific old world locale are from Attymass in county Mayo, Ireland. Persons herein are advised to upgrade to 37 or more markers.

SNP Tests

This group is untested. Either a BigY test or the R1b-M343 Backbone SNP Pack would be appropriate.

Haplotype Table

A modal haplotype is the set of markers corresponding to the most frequently observed values for each marker. The markers highlighted are said to be off modal and patterns in these markers distinguish one branch or family from another.
The R-P312 haplotype in the tables below is a modal given as ySearch ID XQJ7H.
FTDNA Configuration - DNA Results Comparison
ID D
Y
S
3
9
3
D
Y
S
3
9
0
D
Y
S
1
9
D
Y
S
3
9
1
D
Y
S
3
8
5
D
Y
S
4
2
6
D
Y
S
3
8
8
D
Y
S
4
3
9
D
Y
S
3
8
9
i
D
Y
S
3
9
2
D
Y
S
3
8
9
i
i
D
Y
S
4
5
8
D
Y
S
4
5
9
D
Y
S
4
5
5
D
Y
S
4
5
4
D
Y
S
4
4
7
D
Y
S
4
3
7
D
Y
S
4
4
8
D
Y
S
4
4
9
D
Y
S
4
6
4
D
Y
S
4
6
0
Y
-
G
A
T
A
-
H
4
Y
C
A
I
I
D
Y
S
4
5
6
D
Y
S
6
0
7
D
Y
S
5
7
6
D
Y
S
5
7
0
C
D
Y
D
Y
S
4
4
2
D
Y
S
4
3
8
XQJ7H_R-P312_modal 13 24 14 11 11-14 12 12 12 13 13 29 17 9-10 11 11 25 15 19 29 15-15-17-17 11 11 19-23 16 15 18 17 36-38 12 12
423853_Ferguson 12 23 14 11 11-16 12 12 12 13 13 29 16 9-10 11 11 25 15 19 29 13-15-17-18 10 10 19-20 15 14 21 17 36-39 12 12
16180_Ferguson 12 23 14 11 11-16 12 12 12 13 13 29 16 9-10 11 11 25 15 19 29 13-15-17-18
20158_Ferguson 12 23 14 11 11-16 12 12 12 13 13 29 16 9-10 11 11 25 15 19 29 13-15-17-18
Distance from reference: Zero One Two Three+

Genetic Distance

Genetic distance is a measure of the differences between two haplotypes. In its simplest form one simply counts the number of markers that differ. The model used is known as the Hybrid Mutation Model and conforms to that used by Family Tree DNA.
Genetic Distance
ID X
Q
J
7
H

R
-
P
3
1
2

m
o
d
a
l
4
2
3
8
5
3

F
e
r
g
u
s
o
n
1
6
1
8
0

F
e
r
g
u
s
o
n
2
0
1
5
8

F
e
r
g
u
s
o
n
XQJ7H_R-P312_modal 37 15 6 6
423853_Ferguson 15 37 0 0
16180_Ferguson 6 0 25 0
20158_Ferguson 6 0 0 25
Related Probably Related Possibly Related
FTDNA's Interpreting Genetic Distance for 37 Markers
FTDNA's Interpreting Genetic Distance for 67 Markers
FTDNA's Interpreting Genetic Distance for 111 Markers
- Hybrid mutation model is used
- Values on the diagonal indicate number of markers tested

Time to Most Recent Common Ancestor

The Time To Most Recent Ancestor (TMRCA) is a measure of relatedness and well defined in the case of a family tree wherein one simply counts the number of generations back to the most recent common ancestor shared with someone else in the tree. From differences in haplotypes between two men it is possible to make a rough estimate of the probability that the TMRCA falls between two numbers. The numbers reported in the table below are such that the TMRCA will be less than the number shown with a probability of 95%.
Time to Most Recent Common Ancestor (Generations)
ID X
Q
J
7
H

R
-
P
3
1
2

m
o
d
a
l
4
2
3
8
5
3

F
e
r
g
u
s
o
n
1
6
1
8
0

F
e
r
g
u
s
o
n
2
0
1
5
8

F
e
r
g
u
s
o
n
XQJ7H_R-P312_modal 37 39-97 31-112 31-112
423853_Ferguson 39-97 37 0-25 0-25
16180_Ferguson 31-112 0-25 25 0-25
20158_Ferguson 31-112 0-25 0-25 25
Related Probably Related Possibly Related Probably UnRelated
- Infinite allele mutation model is used
- Average mutation rate varies: 0.0024 to 0.0036
- Mutation rates from Heinilia, 2012
- Values on the diagonal indicate number of markers tested
- The TMRCA is expected to be in the range shown (5% to 95%)
- Related means in a genealogical time frame as defined by ISOGG



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