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General => Ancestral Family Tree DNA Testing => Topic started by: vetcan on Monday 30 October 17 18:11 GMT (UK)
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Hello, I am new here. I did my ancestry DNA through 23 And Me and my sister did hers through Ancestry.com
The results are really different. For instance my results show only 9.6% Italian and hers showed 26% Italian. It also showed her as being 3% West Asian and myself 4.4% Iberian. According to my results i am also French and German, and hers doesn't mention either of these in her DNA results. I am not really sure what to make of this whole thing.
Can anyone help?
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In truth these autosomnal DNA tests do NOT tell you your ethnic ancestry. What they do is tell you what you have in common with their sample populations. As all the companies have different sample populations it would be possible for you to test with the three leading companies and get three very different results.
As to your sister having markedly different results to you, well apart from her using a different company the genes you both inherited from your parents were at random so it is perfectly within reason that she inherited much altered genes from your parents than what you did.
At the end of the day autosomnal DNA isn't really good enough to tell people what their ethnic inheritance is as it is based too much on assumptions and sometimes very small comparison samples. On that score it is best being treated as a bit of fun. It is much better for helping people look for relatives etc
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It is normal, read the end of this blog https://blogs.ancestry.com/cm/whos-more-irish-you-or-your-sibling/
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I'm still trying to understand DNA but I have a question which I don't think has been asked on the various threads...
Would identical twins have the same DNA from their parents?
Annie
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Identical twins should have identical DNA.
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Identical twins should have identical DNA.
Thanks H...
I think this will make things more understandable to others as to why their DNA passed down from their parents is different from their siblings DNA passed down, in simple terms?
Annie
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In truth these autosomnal DNA tests do NOT tell you your ethnic ancestry. What they do is tell you what you have in common with their sample populations. As all the companies have different sample populations it would be possible for you to test with the three leading companies and get three very different results.
Personally I found mine to be very accurate, for instance, if I run my autosomal DNA through the admix calculators on Gedmatch, my closest populations are Swedish and North Dutch (Frisian).
Now given that I'm East Anglian with a whole bunch of Viking ancestry, I'd say that's pretty accurate.
Perhaps you should try some admixture tools on Gedmatch?, accurate for most people.
Of course they compare you with existing populations, how else would you do it?
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Personally I found mine to be very accurate, .......
Of course some people will get results that they think are accurate, and in some cases they may well be. However, there are an awful lot of people who dispute the results they get and with good reasons. They detail their tails of woe on message boards all over the place. Of course if people get what they wanted to see they will think they are the best thing since sliced bread and that is their entitlement. Still the point is these tests are a pseudo science that trap the gullible and unaware.
Many reputable genetic scientists dispute the wilder claims of these ethnicity DNA tests why not have a good read around I am sure that will be more informative than anything I can say to you here.
Good luck.
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Personally I found mine to be very accurate, .......
Of course some people will get results that they think are accurate, and in some cases they may well be. However, there are an awful lot of people who dispute the results they get and with good reasons. They detail their tails of woe on message boards all over the place. Of course if people get what they wanted to see they will think they are the best thing since sliced bread and that is their entitlement. Still the point is these tests are a pseudo science that trap the gullible and unaware.
Many reputable genetic scientists dispute the wilder claims of these ethnicity DNA tests why not have a good read around I am sure that will be more informative than anything I can say to you here.
Good luck.
If you have used the analytical tools available, and understand the interpretation, the results you get are pretty accurate. I use the various Admixture Tools on Gedmatch.
Personally, I don't rely on the interpretation by FTDNA, Ancestry, or others.
You are of course entitled to your opinion. :)
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If you have used the analytical tools available, and understand the interpretation, the results you get are pretty accurate. I use the various Admixture Tools on Gedmatch.
Personally, I don't rely on the interpretation by FTDNA, Ancestry, or others.
You are of course entitled to your opinion. :)
I have over 200 posts on the Ancestral Family Tree DNA Testing board. Perhaps if you read them you would not be so quick to criticise me, and incidentally would not have made some of the assumptions you have about me. Still there you go each to their own.
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Would identical twins have the same DNA from their parents?
Annie
Identical twins come from one egg fertilised by one sperm, the egg divides into two separate embryos. Therefore their DNA would be the same. This is different to fraternal twins who come from two eggs and two sperm and therefore are no different to two children born separately.
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If you have used the analytical tools available, and understand the interpretation, the results you get are pretty accurate. I use the various Admixture Tools on Gedmatch.
Personally, I don't rely on the interpretation by FTDNA, Ancestry, or others.
You are of course entitled to your opinion. :)
I have over 200 posts on the Ancestral Family Tree DNA Testing board. Perhaps if you read them you would not be so quick to criticise me, and incidentally would not have made some of the assumptions you have about me. Still there you go each to their own.
I think you need to take a deep breath and calm down. :)
I doubt all those individuals have used the Admixture Tools available, or understood them correctly. Clusters overlap and it can be easy to receive the erroneous results.
For instance, I have 4% Ashkenazi Jewish in my FTDNA results, I don't have any Jewish ancestors, but with a little research I learned Ashkenazi Jews overlap with Italians and Greeks. This is because they all share East Med DNA.
Most likely that element of my DNA is from the Romans.
So, in summary, most results aren't totally wrong, it's the tools used and the
interpretation of the data.
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I think you need to take a deep breath and calm down. :)
I doubt all those individuals have used the Admixture Tools available, or understood them correctly. Clusters overlap and it can be easy to receive the erroneous results.
For instance, I have 4% Ashkenazi Jewish in my FTDNA results, I don't have any Jewish ancestors, but with a little research I learned Ashkenazi Jews overlap with Italians and Greeks. This is because they all share East Med DNA.
Most likely that element of my DNA is from the Romans.
So, in summary, most results aren't totally wrong, it's the tools used and the
interpretation of the data.
Well I assume you have not read my 200 plus posts that I referred to in my last post or else you would not have posted what you just did.
I am no expert on DNA testing, don't claim to be and never have, however I do recognise when someone is being disingenuous in my opinion. I have invited you to read more widely then you might understand where my criticism comes from, until then there is no point in discussing this with you as you appear to have a closed mind.
Oh and being patronising doesn't advance your argument so perhaps you would like to leave it out next time, should there be one.
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I think you need to take a deep breath and calm down. :)
I doubt all those individuals have used the Admixture Tools available, or understood them correctly. Clusters overlap and it can be easy to receive the erroneous results.
For instance, I have 4% Ashkenazi Jewish in my FTDNA results, I don't have any Jewish ancestors, but with a little research I learned Ashkenazi Jews overlap with Italians and Greeks. This is because they all share East Med DNA.
Most likely that element of my DNA is from the Romans.
So, in summary, most results aren't totally wrong, it's the tools used and the
interpretation of the data.
Well I assume you have not read my 200 plus posts that I referred to in my last post or else you would not have posted what you just did.
I am no expert on DNA testing, don't claim to be and never have, however I do recognise when someone is being disingenuous in my opinion. I have invited you to read more widely then you might understand where my criticism comes from, until then there is no point in discussing this with you as you appear to have a closed mind.
Oh and being patronising doesn't advance your argument so perhaps you would like to leave it out next time, should there be one.
I've not been patronising at all, I listened to your opinion and gave mine in return.
I suggest you do some reading on clusters and how they overlap, it will explain the majority erroneous results. Most ethnic groups overlap each other, some groups are more of a mix than others.
Thank you for your replies :)
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I've not been patronising at all, I listened to your opinion and gave mine in return.
I suggest you do some reading on clusters and how they overlap, it will explain the majority erroneous results. Most ethnic groups overlap each other, some groups are more of a mix than others.
Thank you for your replies :)
I know what I am talking about which is why I mentioned the previous posts in the hope that you would look at them and see for yourself. Assuming that would probably not be enough to placate you, even though there are many posts in those threads by others that support me is why I suggested you read more widely. Alas that has fallen on closed ears, again, and you have just resorted to posting more claims based on your false assumptions. If that is how you want to proceed that is up to you but I do not believe it is helpful to others.
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Would identical twins have the same DNA from their parents?
Annie
Identical twins come from one egg fertilised by one sperm, the egg divides into two separate embryos. Therefore their DNA would be the same. This is different to fraternal twins who come from two eggs and two sperm and therefore are no different to two children born separately.
I can think of instances (due to a very early mutation in a cell prior to the split) where "identical" twins would differ very very slightly, but I don't think the genealogy DNA tests would pick it up. That's why I wasn't emphatic about it. Even all the cells in a singleton aren't necessarily EXACTLY the same.
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Personally I found mine to be very accurate, for instance, if I run my autosomal DNA through the admix calculators on Gedmatch, my closest populations are Swedish and North Dutch (Frisian).
Just wondering (referring to the original question)...
Is your reply meaning you have tested along with a sibling of same sex which the original query related to?
If not then your comparison on anything is not going to help the OP...just saying :D
Annie
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Why must they be siblings of the same gender Annie? I don't think the gender matters.
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Why must they be siblings of the same gender Annie? I don't the gender matters.
H...
I do understand your comment but...
In relation to the original question my point was for the comparison of what was asked which was in relation to 2 siblings of same gender & wondering if the findings of ke were in relation to 2 siblings of same gender.
I'm not disputing anything as I know not anything ::) about DNA but I do think responses should relate to the initial enquiry for comparison for the sake of the OP.
Annie
Add...Ohh, I have just read over the initial enquiry & I had assumed both were of the same sex as it wasn't stated they were of different sex i.e my apologies to ke & yourself!
Maybe the OP should have been more clear on that aspect as I thought ( ???) it more likely for 2 siblings of the same sex to have a closer corresponding DNA match but I guess I'm wrong :D
Still learning & interested though ;D
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ke's suggestion about trying the admixture calculators at Gedmatch is helpful for the OP. The OP could try running both kits through the SAME calculator on Gedmatch (rather than using the FtDNA calculator for one kit and Ancestry for the other).
The gender of the siblings won't matter for admixture.
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Thanks for some of the great info provided on this thread. I didn't realise you could get such different results from siblings - I thought they would be at least close to identical.
I just uploaded my four DNA tests to MyHeritage (free transfer) and these were the results for my father and his sister:
(https://s17.postimg.org/wz6t8sgtr/out.png)
Though I think MyHeritage could do with some tweaking, as there is just too much difference between the two.
I believe these ethnicities are meant to refer deeper ancestry, in the region of about 2,000 or more years ago. Can anyone shed light on that?
As someone with a good dose of non-European ancestry I've found FTDNA and Ancestry's at results to be useful and accurate enough. I don't have much of a paper trial for my non-European ancestors, though it will exist, just in India and I don't know where to start. The most notable addition FTDNA has provided is that I have Jewish ancestry. Many of my close matches are exclusively Eastern-European Ashkenazi Jews in the region of Ukraine and Lithuania. The only way I will ever be able to find the link to these people is via DNA. However, FTDNA's results were a bit more accurate before they switched to their new myOrigins setup.
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Sorry for sounding a complete ****, but could you confirm what OP stands for! I know it might be a generic, 'other person' (in the discussion), or indeed, 'original person' even, but that is just guessing on my part!!
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PS - the word blocked out was not that bad!, (in my opinion), and I was talking about myself in I thought a self deprecating way, so did not anticipate it would cause any offence at all. Sorry if some do think it so - which they clearly do as it was automatically asterisked on posting!
jane
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OP = Original poster.
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thanks
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PS - the word blocked out was not that bad!, (in my opinion), and I was talking about myself in I thought a self deprecating way, so did not anticipate it would cause any offence at all. Sorry if some do think it so - which they clearly do as it was automatically asterisked on posting!
jane
I think there are some words which are not allowed to be posted and they are automatically asterisked, so no one would have seen the word to be offended by it. ;) :)