Posted by:
justrob
(
)
Date: March 13, 2013 04:31PM
The beauty of DNA is that it isn't a small set of flags, but a vast palette.
For the mitochondrial DNA to be purely Egyptian (which doesn't show up in the Native American genome) it would require ALL descendants of Asenath to have married ONLY Egyptian women (including Sariah and Ishmael's wife). We have at least partial record of their genealogy, and that seems incredibly unlikely (though into impossible, since the bible largely ignores women):
http://www.lds.org/scriptures/ot/num/27.1?lang=eng#primaryBut assuming a completely pure line of mitochondrial DNA, we can still see the vast palette of DNA that isn't linked completely to the matriarchal line.
We are able to draw maps of where your heritage is from, and where they migrated to, based on matching sequences.
Think of it like a REALLY long journal in a bunch of languages you don't understand. You may not know what it all means, but you can say "In all the known literature in the world, I've only seen that exact phrase used in region X." So you can pattern match different sections of the journal to see where the text was copied from.
You can also look at the mutation rates to see the relative age of DNA segments (think of it like monks copying biblical text- Monk A typos something, Monk B copies that typo and makes some of his own, etc... so we can tell a general hierarchy of texts, allowing us to know which copies are older/newer)