I love graphics. It's easier to explain complicated issues to others with a graphic or two. It's easier to understand them yourself! Sometimes, a good graphic can show you what you're missing. And what we're missing can hurt our research... To the right is my pedigree chart from Ancestry.com. The pink line is my direct maternal line. I am a female, so I can take the mtDNA test and learn about those women back through time immemorial. Unfortunately, I don't have the ability to take the Y Chromosome test (not having a Y chromosome and all), so I've "nulled" my direct paternal line. To find out about those people specifically, I'd need my brother or father to test. But what about everyone in the green section? Every generation back is just going to add more people that the DNA test doesn't find. Suddenly, my maternal line is a small and lonely fraction of what I am.......