The Y chromosome DNA test, more affectionately referred to as the YDNA test, is the darling of the DNA testing industry. (At least, I think so.) In fact, of the three kinds of DNA tests, the YDNA is my favorite. It has several excellent qualities that make it useful in many genealogical scenarios, but let’s look at three.  Click here to continue reading Lisa Louise Cooke's Genealogy Gems.