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Nan Harvey
http://www.kerchner.com/dna-info.htm
http://freepages.family.rootsweb.ancestry.com/~bonsteinandgilpin/
http://blairdna.com/dna101.html
http://www.familytreedna.com/genetic-genealogy-tutorials.aspx
http://news.yahoo.com/dna-study-seeks-origin-appalachias-melungeons-201144041.html
http://stevemorse.org/genetealogy/beyond.htm
http://www.legalgenealogist.com/blog/2012/06/24/dna-was-he-or-wasnt-he/
http://www.geni.com/blog/dna-testing-for-genealogy-getting-started-part-one-375984.html
Sarah Clevenger
Gives a picture of all 46 chromosomes. Notice how small the Y-chromosome is in relation to the other chromosomes.
http://freepages.family.rootsweb.ancestry.com/%7Ebonsteinandgilpin/
A good review of DNA Testing:
http://www.dna-testing-adviser.com/index.html
The test results for persons with the surname of Clevenger:
http://www.worldfamilies.net/surnames/clevenger/results
Notice that a mutation has occurred in locus # 391 in two of the lines.
Mills was adopted and now knows that his biological father was a Clevenger
Apparently some Clevengers with Virginia heritage have a Grubbs male ancestor.