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Messages - chesya

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Dr Forster of Genetic Ancestry responds to the criticisms on this thread.

First he addresses the accuracy issue: -

"The reason is that  I am puzzled why he/she considers the presented accuracy
"not remotely possible". Your results are good, but not as accurate as many
other clients we have analysed, who have closer matches in our databases, often
surname matches."

On the objections brought by davidft and Guy Etchells, he said: -

"The first comment is simply ignorant (that researchers have not sampled a
sufficient proportion of the human population to cover the main existing DNA
types). But there is perhaps a grain of truth in that a large survey of Africans
a couple of years ago did yield a previously unknown deep Y chromosome lineage
at low percentage. Similarly, some years ago my colleague Turi King found a West
African A-type in a Yorkshire family (surname Revis, I think), and according to
family records going back to the 1700s, there was no recorded African
connection. Roman slave trade perhaps?

It is difficult to find such surprises, underlining that we do have a fairly
detailed understanding of the basic structure of human genetics based on
existing samples.

The second point is a misunderstanding: when we say "tracing African ancestry",
we are simply saying it is possible (even trivial) to distinguish Africans from
non-Africans using DNA. It is NOT the same as claiming that Africans (or Jews or
the British) are genetically uniform. For example, it is easy to recognise that
Rodriquez and Morales are Spanish names, whereas Smith and Attenborough are
English names. It is NOT the same as saying that Rodriquez and Morales are the
same name. I think this is where your correspondent has got the wrong end of the
stick."

I don't intend to be the go-between for opposing arguments here, only that I found Dr Forster's arguments to be more coherent - even if I do NOT accept his findings or methods without question.

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Ancestral Family Tree DNA Testing / Re: So Proud of Great Diversity in My Ancestry
« on: Saturday 11 July 15 19:01 BST (UK)  »
Thanks for everone's thoughts. I signed up here to get people's thoughts and I am grateful to everyone who has replied. I understand what you mean by Donkeys as we share 80% of the DNA of tapeworms and 60% of a banana (this may be apocryphal but it tells a tale). Also 18% of African Americans are related to Edward III and (this is the most common reply face-to-face) we are all related to Ghengis Khan. I get it, but these things also apply to reply to non-helical DNA and to the vast inside part that lies between my father's Y chromosone and my mothers mtDNA. What Genetic Ancestor claims, for instance, is that over 5% of my mtDNA matches that of the mtDNA of 2 people whose DNA was collected in Denmark and that there is a 1% match with one person the Iranian tribes I mention. This only proves that we share a mother within the last 10,000, but the strength of the match imply that this could be much more recent. Regarding the Ashkenazi connection a huge amount of work, as you might has expect, as been done on the  mtDNA https://en.wikipedia.org/wiki/Genetic_studies_of_Jewish_origins (huge health warning). Genetic Ancestor would, in theory, be able to draw a more definite link to fewer and more positively identified maternal ancestors, hence being able to say Belarus Ashkenazi, instead of simply Belarus.

I don't honestly care if I am British, Danish, Jewish, Roma, Iranian, or whatever, only that I may have a long range link with different peoples and whatever this may turn out to be. At nine years old, ignorant of the controversial aspects of my extended family, I stood up in class and gave an account of the broad movements and partition of humanity in Eurasia since the fall of the Roman Empire. I find the specifics of History quite interesting but not nearly as the undercurrents of humanity that lay below.

I do know that my maternal grandmother and her sister, went under an assumed name, probably because they had escaped from a nomadic community that would harm them if found.

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Ancestral Family Tree DNA Testing / Re: So Proud of Great Diversity in My Ancestry
« on: Saturday 11 July 15 15:10 BST (UK)  »
Yikes!

I think the precision of area where someones ancestors are from is a bit weird. How can a test be that accurate? (assuming the information is correct)

£195 each

I can easily afford it and it was important to me.

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Ancestral Family Tree DNA Testing / Re: So Proud of Great Diversity in My Ancestry
« on: Saturday 11 July 15 14:02 BST (UK)  »
@ Guy Etchells - I agree that on reading this passage the claims seem extreme, but rather than being firstly ethnic, most results are geographic in nature in relation to a supposed database giving it an ethnic dimension. This database may not exist or not be as reliable or complete as proclaimed, but I am convinced that there is no sinister desire to divide by fictional ersatz racial categories. A guilty verdict seems likely, but the jury is still out. I will encourage Genetic Ancestor Ltd to post here so that they can defend themselves or be justly taken apart

I know there are holes in Oppenheimer's research but there seems to be evidence of distinct geographic distribution of genetic material. I understand that a majority of people in Britain and Ireland fall into a similar group distinct from continental Europe. I am interested what people think of this.

@ Ruskie - Proud of diverse ancestry? Why not? I believe we are all equal but also different, and I find difference interesting. If my mt results were valid, I would find it fascinating that I had better matches in a database collected in Russia than in my birth place in the UK. I would find it interesting that I had heritage in Northern Iran and Balouchistan and in the Faroes. My Genetic Ancestor mt map would suggest perhaps a nomadic ancestry which I find inherently more interesting. Many of us feel detached from our cultural milieu and are searching for something more (ask people of African Caribbean origin in England for instance). This makes us easy prey, but I have learnt and I am already moving on.

Something which is impossible to verify and therefore strictly speaking invalid is a spatial correlation  between geographical spikes in interest in my artwork as delivered by google analytics and some of Genetic Ancestor's geographical loci. Unverifiable and vague, but there is a hint of a hint of something. Maybe.

@ dgibbins - thank you for the encouragement. A number of my relatives have been engaged in the paper trail, but there is nothing beyond my grandparent's generation. Maybe I am descended from aliens :)

I am no more anxious to be an Ashkenazi than to be related to an untouchable in India, but I am fascinated by the great Ashkenazi civilisation of the Russian pale: Minsk, Pinsk, Kaunas, Kishinev, etc. weakened first by the Russian Empire and then completely obliterated by the Nazis.

I am also powerfully drawn to Sephardic music. Probably means nothing. *shrugs*
   

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Ancestral Family Tree DNA Testing / Re: So Proud of Great Diversity in My Ancestry
« on: Saturday 11 July 15 00:29 BST (UK)  »
My mind is open, I welcome your opinions and thank you for them. I have checked the links yet there is nothing that describes the exact form I should expect for the results and vague remarks as to the levels of geographical accuracy and matching. I await substantiated refutation of the form and content of the results. I am by no means wedded to the results that did strike me at first as too good to be true, but I have found nothing to dismiss them completely and there too many elements that concur with informal family history for both mt and Y results to ever dismiss them 100%. The Y results concur very closely with received understanding of my paternal ancestry.

There is always the possibility that I have taken in - I don't yet know - but I have no regrets. I was faced with discovering my ancestry with a rich oral history and no documentation even for my grandparents' births. The DNA tests only give the outside of the 'V' - all I was searching for was some indication - the mt test results far exceeded my expectations.

The BBC often makes errors in its sources, but even Wikipedia is neither 100% reliable nor up to date

I await a response from rootsforreal and a more specific and substantiated refutation from the experts here. Perhaps I will be able to find more answers through participation here!

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No worries, I only desire as accurate information as can be reliable and your warnings are welcome. I do understand the limitations of the 'pseudo-science', but exhaustive searches cannot even locate the births of any of my grandparents all of whom were supposedly born in the UK. My family history is shrouded in mystery, many family units producing a 'nordic' looking children with 'South Asian' (very rough indications) looking children over and over again - too often to be explained by marital infidelity. Only expected broad indications from the Y and mt tests knowing also that the vast middle of the family tree would remain hidden. I, too was surprised at the accuracy and very pleased. The matches seemed to coincide with hearsay evidence about Sephardic and Roma ancestry, although the Sephardic part turned out to be, in theory, Ashkenazi from the Jewish pale in the old Russian Empire.

The company is Roots for real or Genetic Ancestor Ltd, who say they have worked with the BBC. They do offer explanations for the accuracy of some of their matches in their database, for instance genetic research into the valleys of North-East Iran just prior to the Bam earthquake.

I welcome your opinions and knowledge and will put them to the company.

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Ancestral Family Tree DNA Testing / So Proud of Great Diversity in My Ancestry
« on: Friday 10 July 15 16:30 BST (UK)  »
I thought Father is of German ancestry because of his German name and his (and my) birth place Tottenham in North London , where at the turn of the twentieth century, the first languages were German and Yiddish. To my surprise his strongest ancestry was Dutch, followed by various places in the UK and then in the historic Austrian Empire - Krakow (now Poland), Lubijana (Slovenia) and Reutte in modern Austria. No Y dna matches for Germany which makes the German name hard to explain.

My mother's mtDNA was off the scale.

1 Denmark St Olai, Hyorring, N-Jylland
2 Denmark - Thisted
3.France
4 Stavropol, North of the Caucus, Russia
5 England or Wales
6 Portugal Douro to Tejo
7 Portugal South of Tejo
8 Byelorus - Ashkenazi Jew
9 Serb or Croat
10 Northern Europe (probably Faroes)
11 Portugal - North of Duoro
12 Denmark Copenhagen
13 ditto - Nazaret
14 Czech - Ashkenazy Jew
15 Vorpommern Germany
16 Balouchistan Sistani tribe
17 Germany Bonn
18 Germany Munster
19 Hungary Budapest
20 Csango Hungarian Moldavia Romania
21 Bydgosszcz between Pomerania and Kuawy Poland
22 Ukraine
23 Libya - Sirte (Gadafi's tribal centre)
24 Austria Innsbruck
25 Slovenia
26 India - Havik group Brahmin caste NW Karnatika
27 Germany Freiberg
28 France Strasbourg
29 Romania Ashkenazi Jew
30 Italy Ancona
31 Iran Zanjani tribe
32 Iran Gilaki
33 Iran Azeri
34 Iran Lorestani tribe
35 Iran Fars tribe
36 Iran Torkouman tribe

Others are below 1%

There are only three definite Ashkenazi matches, but there are others like 'Ukraine' that scream it in the context of other matches.

Thank you for letting me share my enthusiasm!aa

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Ancestral Family Tree DNA Testing / Re: My AncestryDNA Results - UK
« on: Friday 10 July 15 15:54 BST (UK)  »
I think it's great to have a varied tree. Scottish and Irish links don't surprise me. A quarter of Irish people have strong English ancestry and 1 in 7 and the English have at least one Irish grand parent. The most common name in Scotland is Smith and the second most common in my High School was MacDonald. On top of this the British and Irish are the same people who pre-date the celts, the thing distinguishing the English being a Germanic tongue with only a minor genetic ancenstry with Angles, Saxon, etc..

I was surprised that I had no Irish or Scottish down my mt or Y lines, although I know they exist in the middle of the y-mt 'V' which no test can pick up.

I'm also pretty sure of Roma (Gypsies) in my ancestry, despite my North European appearance (whatever that is). No trace turned up in my mt or Y DNA results. However, my mt tests include 40 mtDNA locations from India, through 6 Iranian tribes, Libya, masses of Southern, Eastern and Western European. This could only be caused by a nomad group leaving and acquiring mtDNA on their journey.

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