GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2006-12 > 1165933603
From: "Alfred A. Aburto Jr." <>
Subject: Re: [DNA] [DYS 389-2 out of whack
Date: Tue, 12 Dec 2006 06:26:43 -0800
I don't think there are 4 markers (copies) of DYS389. There are just 2
(389i and 389b, or in the other nomenclature 389i and 389ii). Do you
have a copy of the original article?
> Gary Felix wrote:
> 389 is actually 4 markers. Some time ago 389a and 389d were combined to make 389-1 while 389b and 389c were combined to make 389b (which is 389ii - 389i). The discover of the marker determines how it is scored and the 389i and 389ii were his last revision. As I reported to this list several weeks ago out of FTDNA's over 80,000 records there are only 10 instances where 389b is less than 389i. In my opinion, since this is not a multi copy marker and is not reported in this fashion, its reporting is adequate.
> I have found an easy way to compute the genetic distance of this maker by doubling 389i and taking the difference between this doubling and 389ii. This method would be correct over 99.98% of the time.
> Mexico DNA Project Admin.
>"Alfred A. Aburto Jr." <> wrote:
> > Ken Nordtvedt wrote:
>>I should add that reporting 389ii - 389i is not a cute affectation of some
>>labs, it is the superior way to report the second 389 repeat number.
>Yes, and I think the only reason 389II = 389i+389b is kept around is
>because that is how it is measured.
>Where 389b = 389ii-389i ....