GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2009-09 > 1252333309


From: "Ken Nordtvedt" <>
Subject: Re: [DNA] SNPs, Clades, and Trees
Date: Mon, 7 Sep 2009 08:21:49 -0600
References: <46582F875469444F83389C32EC696942@elizabethod><535042.58655.qm@web50602.mail.re2.yahoo.com><905DBCE1D68B4969A6AFAD8B2E252AE2@elizabethod>


My message was meant to surprise; the snp situation does not seem to be
widely seen for what it is.


----- Original Message -----
From: "Elizabeth O'Donoghue" <>
To: <>
Sent: Monday, September 07, 2009 6:51 AM
Subject: Re: [DNA] SNPs, Clades, and Trees


> Raymond, I am aware of your points. That's why Ken's statement - ' A new
> y
> SNP occurs on average in every y line about every father/son generational
> transition. ' - which suggests that almost every son will have an SNP
> that
> his father doesn't, surprised me a bit.
>
> Elizabeth
>
> -----Original Message-----
> From:
> [mailto:] On Behalf Of Raymond Wing
> Sent: 07 September, 2009 1:20 PM
> To:
> Subject: Re: [DNA] SNPs, Clades, and Trees
>
> Two things need to be remembered:
>
> 1) We are currently only testing a small portion of STRs as well as SNPs
>
> 2) Each STR is known to mutate quite frequently, while most SNPs are a
> unique mutation. Even in the rare cases where a SNP loci is known to
> change
> multiple times, the rate of change is MUCH slower than the rate of change
> on
> STRs.
>
> --- On Mon, 9/7/09, Elizabeth O'Donoghue <> wrote:
>
> From: Elizabeth O'Donoghue <>
> Subject: Re: [DNA] SNPs, Clades, and Trees
> To:
> Date: Monday, September 7, 2009, 8:10 AM
>
> That's no doubt true, but Ken, your statement implies that there are an
> extraordinary number of SNP's on the Y chromosome with the rate of
> occurrence you mentioned, going back to genetic Adam.
>
> Elizabeth
>
> -----------------
>
>
>
> -------------------------------
> To unsubscribe from the list, please send an email to
> with the word 'unsubscribe' without the
> quotes in the subject and the body of the message
>


This thread: