Genetic Genealogy Tests: A Pedigree View
2/1/2005
Which DNA tests relate to which branches of your family tree? Consult this handy illustration.
So far, DNA testing can give answers about the top and bottom branches of your family tree. Y-chromosome tests examine your paternal line; mtDNA tests look at your maternal line. The more-controversial tests of autosomal DNA apply to the lines in between.
 
From the February 2005 Family Tree Magazine