Archiver > GENEALOGY-DNA > 2010-11 > 1290963455

From: Ann Turner <>
Subject: Re: [DNA] mtDNA Results Problems
Date: Sun, 28 Nov 2010 08:57:35 -0800
References: <003501cb8f05$0c716e80$6501a8c0@MDZXPS01><>
In-Reply-To: <>

I just confirmed with Mike off-list. 23andMe does not test for position
16304 -- what Mike saw was the position in the Yoruba Reference Sequence
used in the raw data downloads. (The YRS used to be the standard reference
sequence in the Gene database at the National Center for Biotechnology

Ann Turner

On Sun, Nov 28, 2010 at 7:46 AM, Ann Turner <> wrote:

> FTDNA is correct. 23andMe is aware of this discrepancy, but they aren't
> able to correct individual records. I was sort of expecting they would run
> an updated algorithm as a batch process over the summer, too, but they
> perhaps they were involved in designing the v3 chip and decided to wait
> until they saw how things checked out with it.
> Ann Turner
> Disclosure: I have a consulting arrangement with 23andMe, but the
> statements expressed above are my own and not official policy of 23andMe.
> On Sun, Nov 28, 2010 at 6:03 AM, Mike <> wrote:
>> For some time I've been going along with my FTDNA FGS results that place
>> me in haplogroup H5. Then I decided to test with 23&Me during one of their
>> special price campaigns. Their results also came out as H5* seeminly
>> confirming the FTDNA results.
>> Then earlier this year 23&me performed some internal magic (an enhancement
>> they said) that reassigned me to H36. I was confused by this and wrote
>> them. They noted they discovered certain assignment issues that they would
>> begin correcting in July. Yet, the errant assignment still exists and they
>> no longer respond to my email inquiries...
>> So today I decided to compare my raw mtDNA test results between FTDNA and
>> 23&Me labs. I found out of 14 mutations noted by the FGS test results 23&me
>> only tested for 3 locations of which 1 was a "no call" (I presume as the
>> result showed "---"). Within those 3 locations the 16304 mutation result
>> differed between the two labs - FTDNA showed a "C", and 23&me an "A".
>> Furthermore, I do not have the H36 defining mutation at 152 - both labs
>> show me as a "T" there.
>> Now which lab do I believe? Should I present this information to both
>> labs and ask them to confirm their test results?
>> My gut feeling is that the FTDNA results are more comprhensive and
>> therfore correct, but I really don't want to get into a "he said, she said"
>> contest.
>> Thoughts from the group?
>> Thank you,
>> Mike Z.
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