Who’s Your (Great-Grand) Daddy? New DNA Tests Can Tell

If you’re into genealogy and tracing your ancestral roots, new – and cheaper – DNA tests can help you expand the family tree. The Wall Street Journal reports that while DNA tests have been used primarily to establish paternity, a few companies are now offering commercialized tests that let you go back centuries to figure out great-grandparents, distant cousins and the like. This past May, Ancestry.com, a site where people can track their family trees, started selling a DNA test …