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Archiver > GENEALOGY-DNA > 2005-11 > 1131746006


From: "D. Wilson" <>
Subject: Re: [DNA] Haplotype Q and Autosomes
Date: Fri, 11 Nov 2005 13:55:20 -0800
References: <20051111161319.EFKB24935.ibm62aec.bellsouth.net@HALPRIME>


Jim,

To the best of my knowledge the Native American Q population belongs
entirely to subclade Q3. I suppose it is possible that some Q* people came
across the land bridge to the New World at or near the same time the Q3
population did, but I don't recall any studies of New World populations that
found undifferentiated Q haplogroup individuals. If the studies exist but I
have missed them, I hope someone will call them to my attention.

What this means is that you, who SNP-tested positive for haplogroup Q but
negative for subhaplogroup Q3, should probably look to the Q population of
Northern Europe (and before that, North Central Asia) for your patrilineal
ancestry.

The feature your dentist described is known as the shovel-shaped incisor. It
is found broadly among Native Americans and some Asian populations.
According to a Google search I just ran, there are individuals with
shovel-shaped incisors in Sweden. So tooth morphology by itself does not
point unambiguously to Native American ancestry.

I am sure you are right about autosomal genes controlling tooth shape. I
would not expect to see such a gene on the Y-chromosome. The traits could be
inherited from an autosomal chromosome carried by either parent. It wouldn't
be on mtDNA, a specialized form of non-nuclear DNA whose genes are involved
with metabolic processes and have nothing to do with body morphology (though
a bad mtDNA mutation might lead to defective metabolism that could be
associated with a physical manifestation.)

So the analysis boils down to this: dental characteristics permit either
Native American or North Eurasian ancestry. The SNP-determined haplogroup Q
(rather than Q3) points strongly to North Eurasian patrilineal origins. I
think that probably answers your question.

David Wilson


----- Original Message -----
From: "Jim Lawson" <>
To: <>
Sent: Friday, November 11, 2005 8:13 AM
Subject: [DNA] Haplotype Q and Autosomes


>
>
>
> Hello list, I wonder if anyone could speak to this question. I am
> Haplotype
> Q, that is P36+ M3-, and we do not yet know if my line came through Native
> Americans or from a western migration from Asia toward Scandinavia. My
> questions is this, my dentist told me that my teeth indicated Native
> American ancestry but would that be also true for a Q haplotype that came
> to
> this country via the western route? I would assume that the shape of my
> teeth would be determined by autosomes and not by the yDNA markers for
> Haplotype Q and that these autosomes could come from either mtDNA or yDNA
> Or
> both.
>
> Fantastic list, Jim Lawson
>
>
> ==============================
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