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Archiver > GENEALOGY-DNA > 2008-03 > 1204394919


From: "Ken Nordtvedt" <>
Subject: Re: [DNA] DYS19a/19b
Date: Sat, 1 Mar 2008 11:08:39 -0700
References: <002901c87bbc$53fb8600$6500a8c0@dell><21B6876E-46C8-492D-AC54-F0CBCFF24BE2@vizachero.com><00dc01c87bc3$4fa0da40$6400a8c0@Ken1><CEA80E7E-B08C-49CF-8447-63D46847E422@vizachero.com>


If you just ignore it, period, all the time, there is no bias.


----- Original Message -----
From: "Vincent Vizachero" <>
To: <>
Sent: Saturday, March 01, 2008 10:52 AM
Subject: Re: [DNA] DYS19a/19b


> If you ignore the marker because there is a mutation there, and then
> count how many mutations you have, your count is necessarily biased
> downwards.
>
> Vince
>
>
> On Mar 1, 2008, at 12:40 PM, Ken Nordtvedt wrote:
>
>>
>> ----- Original Message -----
>> From: "Vincent Vizachero" <>
>>
>> If you are comparing a large number of haplotypes, the bias
>>> introduced by simply ignoring this one marker is probably going to be
>>> small. But it will produce a biased estimate.
>>
>> Why will not using DYS19 introduce a bias of anything? Ken
>>
>>
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