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Archiver > GENEALOGY-DNA > 2007-02 > 1171580611


From: "Roberta J. Estes" <>
Subject: Re: [DNA] TMRCA
Date: Thu, 15 Feb 2007 18:03:31 -0500
In-Reply-To: <009001c75153$6aa32280$6400a8c0@Ken1>


Yes, you're right, 7.5 is not the same as 100. So it looks like the
predicted base rate is where the error is then, although that is still
significantly higher than it's supposed to be.

Where do you find the mutation rates for each marker published? I though
those had not been released, or is this something you're calculated?.

Roberta

-----Original Message-----
From:
[mailto:] On Behalf Of Ken Nordtvedt
Sent: Thursday, February 15, 2007 5:49 PM
To:
Subject: Re: [DNA] TMRCA

What has a "predicted mutation rate of .0002"? Maybe my old pal DYS455?

7 1/2 times larger is not the same as 100 times larger. I wish to point out
nothing more than mutation rate for 391 is thought to be .00265 and
mutation rate for 458 is thought to be .00814


----- Original Message -----
From: "Roberta J. Estes" <>
To: <>
Sent: Thursday, February 15, 2007 3:32 PM
Subject: Re: [DNA] TMRCA


> 1/400= 0.0025
> 3/160 would be the same as 7.5/400, which is vastly larger than 1/400,
> seven
> and a half times larger.
> 3/160= 0.0188 whichis 1.88% which I rounded to 2
> 8/160= 0.05 which is 5% exactly
>
> I don't see any extra zeros. Where are they?
>
> The predicted mutation rate of 0.0002 (2%) times 100 equals 0.02,
> according
> to my calculator, unless there is something logically wrong and not
> mathematically wrong.
>
> I used the same math equations for the rest.
>
> Is there something logically wrong? I think the math is correct.
>
> Roberta
>
>
>
> -----Original Message-----
> From:
> [mailto:] On Behalf Of Ken Nordtvedt
> Sent: Thursday, February 15, 2007 5:10 PM
> To:
> Subject: Re: [DNA] TMRCA
>
> I think 1/400 is in the ball park of average rate, at least that's what I
> use for back of the envelope estimates.
>
> 1/400 = .0025, so I think you got extra zeros in your rates.
>
>
>
>
>
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