GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2003-04 > 1051117216


From: "TONY N FRUDAKIS" <>
Subject: RE: [DNA] Question about the DNAPrint test & NA
Date: Wed, 23 Apr 2003 12:52:23 -0500
In-Reply-To: <12c.28913f7c.2bd81bd6@aol.com>


Julia,

Assuming all of your great great grandparents were Europeans, if one of your
ggm was 50% Native American (remember, European-Native American admixture
began immediately after the Europeans arrived), then your expected ancestry
would be about 6% NAM on an IndoEuropean background. This same story was in
my family, and I am 8% NAM on an IndoEuropean background. However, the laws
of probability are at work here - each generation there is a shuffling of
the deck and an offspring may recieve greater or fewer of the Native
American chromosomes than expected. The bottom line is you could be more
then 6% or less than 6%, even 0% (undetectible with our test). The MLE from
our test would be the best estimate of your percentage that is possible to
obtain from any source.

Tony Frudakis, Ph.D.
DNAPrint genomics, Inc.

-----Original Message-----
From: [mailto:]
Sent: Wednesday, April 23, 2003 11:40 AM
To:
Subject: [DNA] Question about the DNAPrint test & NA


I have a question about NA ancestry.

Speaking of NA family lore, my Mom always told me that her grandmother,
Martha Louise BRUCE said that she was part Indian, meaning of course, NA. I
have been researching for years without finding this to be true, but I keep
running into distant cousins, and all of them have heard the same story.
The
question, always being, which one was the Indian? I haven't had this
question in any other line. So I believe that it is a fact that we share NA
ancestry.

My question is: Since it is in my mother's line, but there have been at
least
two males in the descent from the suspected NA to my Mom, in about 7
generations, would a DNAPrint test be expected to show any NA percentage?

Julia French Wood


==============================
To join Ancestry.com and access our 1.2 billion online genealogy records, go
to:
http://www.ancestry.com/rd/redir.asp?targetid=571&sourceid=1237


This thread: