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African American DNA Research Forum

DNA Testing
In Response To: DNA Tests? ()

Originally posted To: AfricanAmericanRoots afrigeneas@Lists.MsState.Edu

> For example, I had my father's DNA tested by several
> competing DNA companies ... I was curious to see if
> their results matched one another ... and in every
> single case, I was told that my father's line has
> absolutely NO African ancestry whatsoever. Even
> though I've traced that line (the Lees) back through
> eight generations of black men who lived in Canada as
> early as the 1700s, ..... All these years I
> guess I've been passin' as black ... go figure.

Lisa, assuming you are speaking of the Y-chromosome test, no, that's not what they told you. They told you that ONE LINE, out of hundreds of lines in your father's lineage (thousands of lines??), was non-African.

The other gazillion of his ancestors could have ALL been African. As one narrator in the film "Motherland: A Genetic Journey" said, these tests give you only one of thousands of ancestors, a snippet of your ancestry.

All of those black LEEs you traced apparently had a non-African
progenitor SOMEWHERE in the past and it could have happened a thousand
years ago!!! As you yourself said, there is no way to tell WHEN it happened

Take a look at the Lemba's story, Black South Africans with
Y-chromosomes belonging to the Jewish priestly caste:
http://www.pbs.org/wgbh/nova/israel/parfitt.html

And New Mexico Hispanics with Y-chromosomes from the same Jewish
priestly caste as the Lemba, traceable back to the time of the Spanish
Inquisition:
http://www.boston.com/news/nation/articles/2004/12/12/dna_helps_new_mexico_hispanics_uncover_links_to_judaism/

I bowl with a Caucasian man with a Chinese surname. My curiousity was
killing me so I had to ask. One of his great-grandfathers was Chinese,
the other seven great-grandparents were white. His Y-chromosome would
test as Chinese, yet he's blond and blue-eyed.

Another statistic from that film was that about 1/3 of the African
American men tested had European Y-chromosomes, not African, and your
dad probably falls into this category.

For the original poster, if you are the son of the son of your
grandfather, and your Y-chromosome tests as European, the chances are
the story is correct. At least that would show that SOME European was
the father of your grandfather. To say that it was the particular
slaveowner, you would need to test against the Y-chromosome of the
slaveowner's family, and that DNA would have to be from a direct male
descendant (male to male to male, etc.) of the slaveowner. Just think of the Thomas Jefferson controversy, where they tested a descendant of
Thomas Jefferson's uncle, since ol' Tom had no sons.

> All this concern over DNA tests of male-line descendents
>illustrates a simple sex-based principle of history and genealogy,
>best summarized by the old saying about the difference between
>knowledge and belief: "Mrs. Jones knows she has a son, and Mr. Jones
>believes he has a son."

toot


18 Dec 2002 :: 14 Nov 2008
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