Hi Jeff,
Matches are possible with people of other surnames since there are only
so many allele repeats possible and mutations occur in both directions,
increasing and decreasing. A 37/37 match between people of different
surnames is rare, but it actually only means you have a 3% chance of
sharing a paternal ancestor in the last 100 years, three to four
generations, and a 51% chance of being related in the last 300 years, 9
to 12 generations. That is why the paper trail is important as well.
Going back over 300 years many things are possible. Further refinement
of your DNA is possible with additional testing through DNA Heritage (8
additional markers in a minimum 25 marker test) or Fingerprint DNA.
The more markers the higher the resolution.
Your haplotype is 18/25 with the modal for R1a, which is also why you
have so many matches. The most common allele values at each marker
within a Haplogroup are called modal for that Haplogroup. They are not
necessarily the markers of the progenitor of that haplogroup, just the
most common mutation values for that Haplogroup. The closer a person
is to modal, the larger the number of matches they will have. If you
were trying to match with someone who does not share your surname
you'll have a lot more challenges. The same sort of challenge one
faces when trying to match mt-DNA. Personally, I check with everyone
who is close to my haplotype because you never know what you'll find
and at times you find surprises. Names change and other opportunities
for a common male line ancestor can pop up and sometimes be confirmed
with DNA testing. That is also why it is best to test several
individuals from a given line, then if there was an occasion for
another males DNA to get into the line it can be exposed and you are
not stuck trying to solve an impossible puzzle.
A note on your Haplotype. I1a and R1b are both likely haplogroups
within the Anglo Saxon population that invaded the western isles at the
end of the Roman period. R1b is common throughout western europe and
is the single largest haplogroup in that area. So two lines, where one
is I1a and the other is R1b have a good chance of being related if
genealogical information indicates it, just not genetically through the
paternal line within the last 10,000 years or more. The lowlands of
Scotland [and all northern Europe] contain a good share of both of
these Haplogroups as well as a sprinkling of others.
Ken Nordvedt, a Mathematics Professor at California State University at
Long Beach searches the DNA databases and derives common Haplogroup
information from them. This is what he says about your variety of R1a.
Allele values of "[12] 14, 22, 13, 14 [at] DYS [462], 19, 390, 385a,b
[represent] the most populous I1a haplotype and [are] found in good
quantities throughout Germany, Netherlands, Denmark, southern Sweden,
and lesser extent Norway and north Sweden. It is hardly found in
Finland. It has been called the "Anglo-Saxon" I1a variety, and it is a
good candidate for the ancestral I1a form.
I have used YHRD database to develop the geographical information on
these various I1a varieties, with generally supportive information from
Sorenson database."
Ken Nordtvedt
original post to the DNA-Genealogy mail list is at:
http://listsearches.rootsweb.com/cgi-bin/ifetch2?/u1/textindices/G/
GENEALOGY-DNA+2005+2134747177086+F
YSTR DNA (DYS) do mutate at a rate of once per 5 generations, so it is
possible that the DYS values are not an accurate indication of
Haplogroup. Verification of Haplogroup requires an SNP test. SNP
tests are available through Family Tree DNA, DNA Heritage and
Ethnoancestry. The multi marker SNP test through DNA Heritage and
Ethnoancestry are the best SNP tests available at this time and provide
a good definition of Haplogroup.
Write anytime and we can discuss DNA genealogy and deep ancestry
genetics more.
John Carr
On Oct 24, 2005, at 5:35 AM, ffejlny(a)juno.com wrote:
So, my idea that we came from a maurading Scottish crusader passing
through Germany is probably wrong. In 1731 we were K-A-R-R anyway.
That holds back through 1620 or so in Germany. Few records survived
before 1600. Hans Karr was a magistrate in Wuerttemberg. He lived
near the French border. We are supposed to be related to C-A-R-R-E in
France.
I still don't see why I am related to WEBB whose family came into CT
and has lived in the CT/NY area since that time.
Jeff Carr of TX
Hi Jeff,
Well with twelve markers in John says you and I are definatly not
related.
He says your haplo is norwegion and mine is mid european. You must be
related to the lothians and the rest of the viking's. The trouble with
Carr
is that we are not neccesarily renamed Kerr's There were three that I
know
of and as I recall a forth family of Irish gaels that changed their
name to
Carr during the penal laws in Ireland. But there is only about 27 of
us so
far in the project so things will probably change as we grow.
especially
when we start getting results back from scotland and ireland.
Jim
> I think it is interesting that I sent in DNA to find out about Carrs,
> and
> I am a 100% match with a Webb. We matched in all 36 spaces. What
> does
> that mean?
> In fact, I can see nothing in common with any of the folks that they
> say
> are a match.
> Jeff Carr of TX
>
>
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