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Author: teresa_ghannam
Surnames:
Classification: queries
Message Board URL:
http://boards.rootsweb.com/surnames.chastain/103.1/mb.ashx
Message Board Post:
He was MY bio dad too. He listed as living in Modesto, CA. He has married and has a son age 27 or thereabouts.Never met him.
I was adopted along with my older sister in Sacramento CA-we are not twins-we are 10 months apart. I am age 54 born May 1960 and my sister just turned 55 born July 1959.
We also have a half brother (age 44) with Bio-Mom Nancy Small Chastain Gast. Nancy died around 1994.
email me at teresa.ghannam(a)gmail.com
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<br>
Marv,
It'll start to get pretty deep, the short answer is that it's not moot, at
all.
Each of the 23 Chromosomes has between 45 Million and 245 Million base
pairs. Each can be very accurately measured. While inheritance is somewhat
random, the base pairs themselves can not be random.
So it is actually impossible for us to have a randomness to a string of
matching segments. Such that if you and I had as few as 7cM (centimorgans)
( http://en.wikipedia.org/wiki/Centimorgan ) that are the same, we can say
we would be related.
There are loads of resources available if you are interested in learning
more.
http://genealogy.about.com/od/dna_genetics/p/autosomal.htm
"How Accurate is Autosomal DNA Testing?:
The average amount of autosomal DNA shared with a relative decreases with
each successive generation. Percentages are also approximate - for example
a sibling may share anywhere from 47–52% of their DNA in common.
50% (parents and siblings)
25% (grandparents, aunts/uncles, half-siblings, double first-cousins)
12.5% (first cousins)
6.25% (first cousins, once removed)
3.125 (second cousins, first cousins twice removed)
0.781% (third cousins)
0.195% (fourth cousins) " <----- still very measurable ***
https://www.familytreedna.com/learn/http://dna-explained.com/category/autosomal/
In the end, it's sounds like Marv's queries have answered my questions; No
there is no coordinated effort to map the CHASTAIN chromosomal segments.
Warm Regards,
Eric Wilson
On Sun, Aug 17, 2014 at 6:32 PM, Marv Chastain <marvc(a)crescomm.net> wrote:
> *ERic*
> *Ahh, but how do you know those characteristics aren't from some totally
> foreign source? Having two non-related parents over a series of
> generations pretty much makes such studies mute, so far as I can see.*
>
> *Marv*
>
> ----- Original Message -----
> *From:* Wilson(a)lists9.rootsweb.com ; Eric via <chastain(a)rootsweb.com>
> *To:* CHASTAIN(a)rootsweb.com
> *Sent:* Sunday, August 17, 2014 3:43 PM
> *Subject:* Re: [CHASTAIN/PCFA] CHASTAIN autosomal DNA fingerprint
>
> Hi Marv,
>
> The details in the autosomal DNA results are used to determine segments of
> DNA that, with *triangulation*, can be attributed to a an MCRA (Most Recent
>
> Common Ancestor.) Triangulation is the comparison of matching DNA segments
> between multiple people and then a study of there family tree to determine
> if there is a corresponding overlap at the same point in the family trees.
>
> Steve alluded to that in his response in February:
>
> "That matched area may be from a maternal line that married into your
> common Chastain ancestry upstream from the two of you. Best bet is to do a
> multiple person match and do a triangulation and if the areas all match on
> the browser then there is an increased chance of that area being Chastain
> DNA."
>
> I'm having very good luck finding chromosomal segment matches with people
> who have CHASTAIN, ARCHER, SOBLET in there family trees. What I do not
> find is a repository where those *without *proven CHASTAIN paperwork
>
> compare - triangulate - the results against the DNA of paperwork proven
> CHASTAINs to confirm a match.
>
> For example, yourself, being a Y-DNA descendant of Pierre, along with
> others, if you had an atDNA sample submitted, to which other CHASTAIN
> suspects and non-direct descendants could compare, a picture would emerge
> of which chromosomal segments matched. There are several projects like
> this for older Continental family lines.
>
> There is a CHASTAIN DNA project for Y-DNA decedents like yourself:
> https://www.familytreedna.com/public/chesnut/default.aspx but I have not
> found one for atDNA results.
>
> Does that help understand my question?
>
>
>
>
> Warm Regards,
>
> Eric Wilson
>
>
> On Sun, Aug 17, 2014 at 5:17 PM, Marv Chastain <marvc(a)crescomm.net> wrote:
>
> > *I trace my ancestry back to Pierre Chastain and beyond. Pierre was 8
>
> > generations back. But 255 other ancestors were 8 generations back. So
> how
> > could any characteristic be identifiable out of that mix? *
> >
> > *Marv Chastain*
> > *marvc(a)crescomm.net <marvc(a)crescomm.net>*
> >
> >
> > ----- Original Message -----
> > *From:* Wilson(a)lists9.rootsweb.com ; Eric via <chastain(a)rootsweb.com>
> > *To:* chastain(a)rootsweb.com
> > *Sent:* Sunday, August 17, 2014 2:55 PM
> > *Subject:* Re: [CHASTAIN/PCFA] CHASTAIN autosomal DNA fingerprint
>
> >
> > Hi all, again.
> >
> > I posed the question back in February:
> >
> > "My question is; Are the autosomal chromosomal characteristics known,
> (e.g.
> > which chromosomes, at which segments, for what lengths.) that determine
> > explicitly which markers are attributed to the CHASTAIN line?"
> >
> >
> > It did not appear that there was any coordinated effort to determine or
> map
> > chromosomal segments to either CHASTAIN, ARCHER, SOBLET, et. al.
> >
> > Is anyone tracking know paperwork CHASTAINs against CHASTAIN atDNA
> results?
> >
> > Will there be any one at the CHASTAIN Family Reunion that might be
> > coordinating DNA sample collection?
> >
> >
> >
> >
> > Warm Regards,
> >
> > Eric Wilson
> >
> >
> > On Wed, Feb 19, 2014 at 12:08 PM, Steve Pearson <
> spearson55(a)chartermi.net>
> > wrote:
> >
> > > Hi Eric. I've done autosomal as well. It's not automatic that if you
> > match
> > > someone else and you both have Chastain ancestry that your matched area
> > on
> > > the Chromosome browser is from the Chastain match. Wish it were that
> > simple
> > > but it is not. That matched area may be from a maternal line that
> married
> > > into your common Chastain ancestry upstream from the two of you. Best
> bet
> > > is to do a multiple person match and do a triangulation and if the
> areas
> > > all match on the browser then there is an increased chance of that area
> > > being Chastain DNA. Use of the web site Gedmatch.com and a few others
> > would
> > > probably help you.
> > >
> > > Steve Pearson, experienced family Historian/Researcher for hire. Call
> for
> > > rates 989-560-0704
> > > Mt. Pleasant, MI. 48858.
> > >
> > > Sent from my iPhone
> > >
> > > > On Feb 19, 2014, at 9:20 AM, "Wilson, Eric" <eric(a)wilson.cx> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > My family has long suspected a tie to Pierre CHASTAIN, via Royal
> > > CHASTAIN,
> > > > but we have lacked decisive paperwork.
> > > >
> > > > I have recently submitted samples for, and received result from, an
> > > > autosomal DNA test whereby there are the common surnames of CHASTAIN.
> > > >
> > > >
> > > > My question is; Are the autosomal chromosomal characteristics known,
> > > (e.g.
> > > > which chromosomes, at which segments, for what lengths.) that
> > determine
> > > > explicitly which markers are attributed to the CHASTAIN line?
> > > >
> > > >
> > > >
> > > > Warm Regards,
> > > >
> > > > Eric Wilson
> > > > Visit the homepage of The Pierre Chastain Family Association at
> > > www.pierrechastain.com
> > > > -------------------------------
> > > > To unsubscribe from the list, please send an email to
> > > CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> > > quotes in the subject and the body of the message
> > >
> > > Visit the homepage of The Pierre Chastain Family Association at
> > > www.pierrechastain.com
> > > -------------------------------
> > > To unsubscribe from the list, please send an email to
> > > CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> > > quotes in the subject and the body of the message
> > >
> > Visit the homepage of The Pierre Chastain Family Association at
> > www.pierrechastain.com
> > -------------------------------
> > To unsubscribe from the list, please send an email to
> > CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> > quotes in the subject and the body of the message
> >
> >
> Visit the homepage of The Pierre Chastain Family Association at
> www.pierrechastain.com
> -------------------------------
> To unsubscribe from the list, please send an email to
> CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> quotes in the subject and the body of the message
>
>
Hi Marv,
The details in the autosomal DNA results are used to determine segments of
DNA that, with *triangulation*, can be attributed to a an MCRA (Most Recent
Common Ancestor.) Triangulation is the comparison of matching DNA segments
between multiple people and then a study of there family tree to determine
if there is a corresponding overlap at the same point in the family trees.
Steve alluded to that in his response in February:
"That matched area may be from a maternal line that married into your
common Chastain ancestry upstream from the two of you. Best bet is to do a
multiple person match and do a triangulation and if the areas all match on
the browser then there is an increased chance of that area being Chastain
DNA."
I'm having very good luck finding chromosomal segment matches with people
who have CHASTAIN, ARCHER, SOBLET in there family trees. What I do not
find is a repository where those *without *proven CHASTAIN paperwork
compare - triangulate - the results against the DNA of paperwork proven
CHASTAINs to confirm a match.
For example, yourself, being a Y-DNA descendant of Pierre, along with
others, if you had an atDNA sample submitted, to which other CHASTAIN
suspects and non-direct descendants could compare, a picture would emerge
of which chromosomal segments matched. There are several projects like
this for older Continental family lines.
There is a CHASTAIN DNA project for Y-DNA decedents like yourself:
https://www.familytreedna.com/public/chesnut/default.aspx but I have not
found one for atDNA results.
Does that help understand my question?
Warm Regards,
Eric Wilson
On Sun, Aug 17, 2014 at 5:17 PM, Marv Chastain <marvc(a)crescomm.net> wrote:
> *I trace my ancestry back to Pierre Chastain and beyond. Pierre was 8
> generations back. But 255 other ancestors were 8 generations back. So how
> could any characteristic be identifiable out of that mix? *
>
> *Marv Chastain*
> *marvc(a)crescomm.net <marvc(a)crescomm.net>*
>
>
> ----- Original Message -----
> *From:* Wilson(a)lists9.rootsweb.com ; Eric via <chastain(a)rootsweb.com>
> *To:* chastain(a)rootsweb.com
> *Sent:* Sunday, August 17, 2014 2:55 PM
> *Subject:* Re: [CHASTAIN/PCFA] CHASTAIN autosomal DNA fingerprint
>
> Hi all, again.
>
> I posed the question back in February:
>
> "My question is; Are the autosomal chromosomal characteristics known, (e.g.
> which chromosomes, at which segments, for what lengths.) that determine
> explicitly which markers are attributed to the CHASTAIN line?"
>
>
> It did not appear that there was any coordinated effort to determine or map
> chromosomal segments to either CHASTAIN, ARCHER, SOBLET, et. al.
>
> Is anyone tracking know paperwork CHASTAINs against CHASTAIN atDNA results?
>
> Will there be any one at the CHASTAIN Family Reunion that might be
> coordinating DNA sample collection?
>
>
>
>
> Warm Regards,
>
> Eric Wilson
>
>
> On Wed, Feb 19, 2014 at 12:08 PM, Steve Pearson <spearson55(a)chartermi.net>
> wrote:
>
> > Hi Eric. I've done autosomal as well. It's not automatic that if you
> match
> > someone else and you both have Chastain ancestry that your matched area
> on
> > the Chromosome browser is from the Chastain match. Wish it were that
> simple
> > but it is not. That matched area may be from a maternal line that married
> > into your common Chastain ancestry upstream from the two of you. Best bet
> > is to do a multiple person match and do a triangulation and if the areas
> > all match on the browser then there is an increased chance of that area
> > being Chastain DNA. Use of the web site Gedmatch.com and a few others
> would
> > probably help you.
> >
> > Steve Pearson, experienced family Historian/Researcher for hire. Call for
> > rates 989-560-0704
> > Mt. Pleasant, MI. 48858.
> >
> > Sent from my iPhone
> >
> > > On Feb 19, 2014, at 9:20 AM, "Wilson, Eric" <eric(a)wilson.cx> wrote:
> > >
> > > Hi all,
> > >
> > > My family has long suspected a tie to Pierre CHASTAIN, via Royal
> > CHASTAIN,
> > > but we have lacked decisive paperwork.
> > >
> > > I have recently submitted samples for, and received result from, an
> > > autosomal DNA test whereby there are the common surnames of CHASTAIN.
> > >
> > >
> > > My question is; Are the autosomal chromosomal characteristics known,
> > (e.g.
> > > which chromosomes, at which segments, for what lengths.) that
> determine
> > > explicitly which markers are attributed to the CHASTAIN line?
> > >
> > >
> > >
> > > Warm Regards,
> > >
> > > Eric Wilson
> > > Visit the homepage of The Pierre Chastain Family Association at
> > www.pierrechastain.com
> > > -------------------------------
> > > To unsubscribe from the list, please send an email to
> > CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> > quotes in the subject and the body of the message
> >
> > Visit the homepage of The Pierre Chastain Family Association at
> > www.pierrechastain.com
> > -------------------------------
> > To unsubscribe from the list, please send an email to
> > CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> > quotes in the subject and the body of the message
> >
> Visit the homepage of The Pierre Chastain Family Association at
> www.pierrechastain.com
> -------------------------------
> To unsubscribe from the list, please send an email to
> CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the
> quotes in the subject and the body of the message
>
>
Hi Eric. I've done autosomal as well. It's not automatic that if you match someone else and you both have Chastain ancestry that your matched area on the Chromosome browser is from the Chastain match. Wish it were that simple but it is not. That matched area may be from a maternal line that married into your common Chastain ancestry upstream from the two of you. Best bet is to do a multiple person match and do a triangulation and if the areas all match on the browser then there is an increased chance of that area being Chastain DNA. Use of the web site Gedmatch.com and a few others would probably help you.
Steve Pearson, experienced family Historian/Researcher for hire. Call for rates 989-560-0704
Mt. Pleasant, MI. 48858.
Sent from my iPhone
> On Feb 19, 2014, at 9:20 AM, "Wilson, Eric" <eric(a)wilson.cx> wrote:
>
> Hi all,
>
> My family has long suspected a tie to Pierre CHASTAIN, via Royal CHASTAIN,
> but we have lacked decisive paperwork.
>
> I have recently submitted samples for, and received result from, an
> autosomal DNA test whereby there are the common surnames of CHASTAIN.
>
>
> My question is; Are the autosomal chromosomal characteristics known, (e.g.
> which chromosomes, at which segments, for what lengths.) that determine
> explicitly which markers are attributed to the CHASTAIN line?
>
>
>
> Warm Regards,
>
> Eric Wilson
> Visit the homepage of The Pierre Chastain Family Association at www.pierrechastain.com
> -------------------------------
> To unsubscribe from the list, please send an email to CHASTAIN-request(a)rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message