With a Simple DNA Test, Family Histories Are Rewritten Widespread DNA testing has shed light on the ancestry of millions of Americans. But these services have limitations, and the results can be uncertain. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:The Monster Surge That Wasn’t: Why Irma Caused Less Flooding Than ExpectedSuicide Data Incorrectly Reported in Drug Trials, Suit ClaimedWhat Does It Cost to Create a Cancer Drug? Less Than You’d ThinkLotfi Zadeh, Father of Mathematical ‘Fuzzy Logic,’ Dies at 96For One Hedge Fund, a Bet on the Affordable Care Act SoursTrilobites: What Swims Like a Duck and Quacks Like a Duck Could Be a Hybrid of Two Duck Species