Marker Mutation Analysis
(This page
updated September 20, 2009)
DNA Participants, Please Note: This DNA Project Website is maintained
on a voluntary basis. If you see an error or omission in any of
your information on this or any other web page, please don't hesitate to contact
Patrick Childress at londonwildcat@earthlink.net
and request an update! We rely on your eyes to catch our mistakes...Also,
please be aware that this web page is updated only when all results from
an individual's testing have been received. There frequently is a several
week delay between receipt of the first 12-marker test results and the extended
results, so please be patient.
When we examine the Y-DNA results, we speak in
terms of "repetitions" which are the numerical values assigned to each of the
12-, 25-, 37- or 67-marker positions. These "repetitions" range from a low of about
"8" to a high of about "38" for each marker,
or alleles. Once we've managed to group individuals together in a common
"Clan" based on the similarity of marker values (repetitions)
on each of the alleles, the absolute
value of each marker is immaterial - we just know that Clan 1, for
example, is comprised of four individuals whose marker values are
identical on all but a few of the marker values.
Thus, once we have determined the constituents of a "Clan," we can effectively discard all those marker values in each Clan where all the
members have identical results and then
concentrate only on the markers where there are mutations from the baseline for
the Clan. (The baseline is that repetition number which is associated
with the greatest number of participants for each marker.)
The purpose of the following table is to draw the reader's attention to those
mutations from each Clan baseline for each participant. By carefully
examining each participant's mutations, particularly where there are matching
mutations with other participants, we can begin to draw fairly accurate
conclusions concerning the Overton family tree and its various branches. Any
of the 12-, 25-, 37- or 67-markers not shown in the following table indicates that all participants within
that Clan had identical values for that marker.
Click
here for a complete spreadsheet of all marker values for all participants
(wait a moment for the data to load to the page).
What do these "Clans" mean? Every individual in each Clan is, by definition, a cousin to every other individual in their
Clan. Perhaps the relationship is "cousin, 10 times removed," but each is a
cousin to the others by virtue of having a common ancestor. Remember, in order for
an individual to be assigned to any Clan, their 25-marker DNA test results
must demonstrate at least a 25% probability of
having a Common Ancestor within the past 24 generations with any other
individual in a Clan. Click
here to review each Clan Lineage.
(Red marker numbers below indicate a
"fast mutating" marker...average mutations occur only once every 6,000
years or so; these fast mutating markers can change more quickly. Click on
the Haplogroup designation below to go to a definition page describing that
Haplogroup's origin.)
Note: Anyone wishing to remove
their name from the following chart should immediately contact the Group
Administrator!
|
CLAN 1 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup R1b1 |
| The markers shown to the
right are ONLY those which have at least one mutation in the entire Clan
from the baseline value. |
3
9
1 |
3
8
9
|
2 |
4
5
5 |
4
4
7 |
4
4
9 |
C
D
Y
a |
OBSERVATIONS:
All of the Overton surname members of this Clan 1 cite ancestors whose American roots
originated in North Carolina. Cousins, certainly; brothers,
perhaps? The problem with this possibility is that the FTDNA
relationship calculator suggests that there is only a 4% probability of a
common ancestor between Alton Lee Overton and Howard B. Overton in the
last 8 generations, given the number of mutations (4 single steps) that
have occurred. Between Howard, Keith and Robert there has been only
one single step mutation occurring; thus, there is a 58% probability of a
common ancestor in the last eight generations. Click
here for a proposed Clan 1 Lineage chart.
|
|
(top
number to right is alleles location)
CLAN 1 - baseline
---»
|
4
11 |
12
30 |
16
11 |
18
25 |
21
29 |
34
37 |
The bold marker values to the left are those
most likely carried by the M.R.C.A. (baseline) |
23012
25 marker
|
Alton
Lee Overton
(Deceased – son Bill
Overton
is contact)
|
10 |
30 |
12 |
24 |
29 |
37 |
(David, b. 1765 in NC) |
36590
67
marker
|
Donald Ray Overton |
11 |
30 |
11 |
25 |
28 |
37 |
(David, b. 1765 in NC) |
27980
25 marker
|
Keith Andrew Overton |
11 |
30 |
11 |
25 |
29 |
37 |
Keith Andrew Overton and Robert Lee Overton have a
perfect 25 for 25 marker match, meaning that there is an 85% probability
of a common ancestor within the past 8 generations, or about 200 years.
(John, Jr., b. 1758 in NC) |
70278
25 marker
|
Robert Lee
Overton |
11 |
30 |
11 |
25 |
29 |
37 |
(see note above)
(Moses, b. 1763 in NC) |
90215
25 marker
|
Howard B. Overton |
11 |
31 |
11 |
25 |
29 |
37 |
(Asa, b. 1771 in NC) |
150858
37 marker
|
Kevin
Glynn Overton
|
11 |
30 |
11 |
25 |
29 |
37 |
(Aaron, b. 1773
in NC) |
10091
67
marker
|
George
Johnson
(Sponsor is 1st Cousin, Angela
Clyburn) |
12 |
30 |
11 |
25 |
29 |
37 |
George Johnson's Y-DNA results reflect a near-perfect match
with the proposed "Ancestral Signature" (see above Clan 1
baseline) at the extended, 67-marker level. This would indicate
that there is a very high probability of either a "non-aligning
paternal event" such as an unannounced adoption, a surname change
from "Overton" to "Johnson" or infidelity in the
past. The possibility also exists that distant ancestors for the
Johnson family line and the Overton family line were closely related
before the assignment of surnames (about 1,000 years ago) and that
mutations have been virtually non-existent in both lines. |
156735
37
marker
|
Samuel
T. Johnson
(Sponsor is Sister, Shirley
J. Cayton) |
11 |
30 |
11 |
25 |
29 |
36 |
Since Samuel and George Johnson are proven cousins, the
above verbiage applies to both participants. |
CLAN 2 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup
E1b1b1 |
| The
markers shown to the right are ONLY those which have at least one mutation
in the entire Clan from the baseline value. |
4
3
9 |
4
4
9 |
4
4
2 |
OBSERVATIONS:
|
|
(top
number to right is alleles location)
CLAN 2 - baseline
---»
|
9
14 |
21
32 |
36
11 |
The bold marker values to the left are those
most likely carried by the M.R.C.A. (baseline) |
25920
37 marker
|
Ronald Andrew Overton
(Sponsor is Anna
O. Jackson) |
13 |
32 |
12 |
- |
43656
25 marker |
Kelley Dean Overton |
14 |
31 |
- |
- |
31465
37
marker
|
Marvin
Cartmell Overton III, M.D. |
14 |
32 |
11 |
Marvin's aunt, Nan West Overton, has traced this
family lineage back to England in the mid-17th century. |
25939
25 marker |
Bill Overton |
14 |
32 |
- |
Bill's DNA reflects an extra allele value of 17
on 464e which is not present on any other
member of this Clan |
|
CLAN 3 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup R1b1b2 |
| The markers shown to the right are
ONLY those which
have at least one mutation in the entire clan from the baseline value. |
3
8
5
a |
4
6
4
b |
4
6
4
d |
C
D
Y
b |
OBSERVATIONS:
|
|
(top
number to right is alleles location)
CLAN 3 - baseline
---»
|
5
11 |
23
16 |
25
17 |
35
37 |
The bold marker values to the left are those
most likely carried by the M.R.C.A. (baseline) |
39244
37
marker; mtDNA Plus
|
Steve Randall Overton |
11 |
15 |
16 |
37 |
Steve's Haplogroup is defined by FTDNA
as R1b1b2a1b, thus the balance of this Clan 3 may rest assured their
Haplogroup also is R1b1b2a1b. |
100551
37
marker
|
Robert Glenn Overton
|
11 |
16 |
17 |
38 |
Robert should be looking for the next Clan 3
Participant who has the same mutation on CDY b. |
25364
25 marker
|
Harold C.
Overton
(Dot Donegan is sponsor for H.C.
Overton)
|
11 |
16 |
17 |
37 |
Harold C. Overton, Robert Wallace Overton and Robert Glenn
Overton have a
perfect 25 for 25 marker match, meaning that there is an 85% probability
of a common ancestor within the past 8 generations, or about 200 years. |
32046
25
marker
|
Robert Wallace
Overton
(Roger Williams, PhD., is sponsor
for R.W. Overton) |
11 |
16 |
17 |
37 |
(see note above) |
93531
37
marker
|
Walter Scott Overton |
15 |
16 |
17 |
37 |
Scott's marker result on 385a, a fast mutating marker, is a bit misleading as it suggests that there is a four-step mutation
difference between Scott and the Clan 3 baseline (11 versus 15).
However this mutating phenomenon is known as a "RecLOH" an
abbreviation for "Recombinational
Loss of Heterozygosity." In this case, a marker overwrites
itself and instead of mutating only once, the mutation appears multiple
times. For the purpose of genealogical analysis, this mutation is
regarded as a single step mutation. Thus, the probability of a
common ancestor existing between Scott and Harold and Robert within the
last 16 generations is 90%; within the last 8 generations, 50%, based on
the 25-marker tests. Since Walter and Steve Randall Overton both
have 37-marker tests completed, we can state that the probability of a
common ancestor for these two individuals within the last 16 generations
is 97%; within the last 8 generations, 72%; and a 31% probability of a
common ancestor between these two individuals within the last 4
generations. |
145398
37
marker
|
Richard
Eugene Overton
|
11 |
16 |
17 |
37 |
Harold C. Overton, Robert Wallace Overton,
Richard Eugene Overton, John Hane Overton and Peter Brian Overton all have a
perfect 37 for 37 marker match, meaning that there is an 84% probability
of a common ancestor within the past 4 generations, or about 100 years. |
157131
37
marker
|
John
Hane Overton
|
11 |
16 |
17 |
37 |
(see note above) |
154309
37
marker
|
Peter
Brian Overton
(Contact is Dayna
Overton Owskey, Peter's sister)
|
11 |
16 |
17 |
37 |
(see note above) |
|
CLAN 4 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup J2 |
| The markers shown to the right are
ONLY those which
have at least one mutation in the entire clan from the baseline value. |
4
2
6 |
4
6
4
b |
4
6
4
c |
OBSERVATIONS:
|
|
(top
number to right is alleles location)
CLAN 4 - baseline
---» |
7
11 |
23
13 |
24
15 |
The bold marker values to the left are those
most likely carried by the M.R.C.A. (baseline) |
46213
25 marker |
Brian Dale Overton |
10 |
10 |
13 |
With this many mutations of markers when
compared to Brian Dale and Mark Charles, we must go back at least 16 generations before the
probability of having a common ancestor between the two Clan member
increases to greater than 50%. |
49149
25 marker
|
Robert Leland
Overton II |
11 |
13 |
15 |
Robert Leland and Mark Charles Overton have a
perfect 25 for 25 marker match, meaning that there is an 85% probability
of a common ancestor within the past 8 generations, or about 200 years. |
156218
37 marker
|
Mark
Charles Overton
|
11 |
13 |
15 |
(see above note) |
|
CLAN 5 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup J2 |
| The markers shown to the right are
ONLY those which
have at least one mutation in the entire clan from the baseline value. |
OBSERVATIONS: |
68291
25 marker |
Charles
Warren Overton |
Charles Warren and Edgar Anderson Overton have a
perfect 25 for 25 marker match, meaning that there is an 85% probability
of a common ancestor within the past 8 generations, or about 200 years. |
45562
25 marker - GenoProject
Conversion |
Edgar Anderson Overton |
(see above note) |
|
CLAN 6 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup
R1b1b2 |
| The markers shown to the right are
ONLY those which
have at least one mutation in the entire clan from the baseline value. |
3
9
1
|
3
8
5
a |
4
6
4
c |
4
6
4
d |
OBSERVATIONS:
|
|
(top
number to right is alleles location)
CLAN 6 - baseline
---» |
4
11 |
5
12 |
24
17 |
25
18 |
The bold marker values to the left are those
most likely carried by the M.R.C.A. (baseline) |
120466
25 marker |
Benjamin Eugene Overton
(Wallar
H. Overton is contact for Benjamin)
|
11 |
12 |
17 |
18 |
FTDNA statistical models suggest that there is
more than a 58% probability that Benjamin and Wallace share a common
ancestor within the past 8 generations. |
145482
67 marker |
Wallace
Henry Overton
|
12 |
12 |
17 |
18 |
(see above note) |
139306
25 marker |
Malcolm
Eugene Overton
|
11 |
11 |
15 |
19 |
Whether Malcolm and the other two members of
this Clan 6 are
related in the genealogical sense (within the past 500 years or so)
remains to be discovered. Here's what FTDNA has to say about a
mismatch of 3 out of 25 markers between Malcolm and Benjamin: "You share the same surname
(or a variant) but are off by 3 'points' or 3 locations on the 25 markers
tested. If enough time has passed it is possible that you and another
distantly related family members' line each have had a mutation, or
perhaps 2. The only way to prove that is to test additional family lines
and find where the mutation took place. Only by further testing can you
find the person in between each of you.." Interestingly,
the mismatches occurred on the markers identified by FTDNA as being most
likely to change, or mutate, between two related individuals with
the same surname. Statistically speaking, we have to go back more
than 16 generations (nearly 400 years) to have at least a 50/50 chance of
finding a common ancestor. |
|
CLAN 7 Y-DNA MARKER ANALYSIS OF MUTATIONS ONLY
Haplogroup
E1b1b1 |
| The markers shown to the right are
ONLY those which
have at least one mutation in the entire clan from the baseline value. |
OBSERVATIONS: |
150613
12 marker |
Dan Overton
(no e-mail address given)
|
Dan and Kenneth Overton are first (or second)
cousins. |
56003
37
marker |
Kenneth Michael Overton
|
Dan and Kenneth matched 12 for 12 on the first 12 markers. |
ANY MEMBER NOT SHOWN IN ONE OF THE ABOVE CHARTS IS
NOT CURRENTLY ASSIGNED TO A CLAN.
CONTACTS FOR QUESTIONS?
For additions, corrections or comments regarding this specific website, please send an e-mail to:
Patrick
Childress, website author & Overton DNA Project Co-Administrator
You may also e-mail Overton Project Co-Administrators Steve
Overton or Dot
Donegan
|
