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Archiver > GENEALOGY-DNA > 2010-02 > 1267219821


From: (John Chandler)
Subject: Re: [DNA] Clerical mutations and lab errors
Date: Fri, 26 Feb 2010 16:30:21 -0500
References: <REME20100225202615@alum.mit.edu><fef9eee41002251748v1aba86a4h604b85abbc4c5917@mail.gmail.com>
In-Reply-To: <fef9eee41002251748v1aba86a4h604b85abbc4c5917@mail.gmail.com>(message from John S Walden on Thu, 25 Feb 2010 20:48:00 -0500)


I wrote:
< Thus, I have a reading on the discovery rate for lab errors, including
< clerical errors at the lab: 1 per 800 haplotypes. You can divide by
< 67 if you want the per-marker error rate

John wrote:
> I am confused - I would think that would be multiply to get about 1 error
> per 50,000 markers

I guess I was unclear. When I wrote "1 per 800", I was using words to
express the fraction 1/800. If you divide 1/800 by 67, you get about
1/50000. Sorry about the confusion.

John Chandler


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