The cross roads of genetics and genealogy is a exciting new frontier right now. Individuals everywhere are quick to provide a DNA sample to one of the various testing companies. Then they sit back and wait. Anticipation builds waiting for the grand revelations that the sample will show.
Then the results come back.
When an overwhelming amount of matches and information is suddenly dumped into their laps after weeks of waiting a lot of people are chased off.
For those who actually dig into the matches and start to work out the various connections it can either be a fascinating new addiction or a confusing new version of trigonometry that will make your brain hurt. Often it can be both.
Puzzling it all out.
I went down the rabbit hole of genetic genealogy and quickly found myself hooked. Where traditional genealogy can often be questioned because people can provide incorrect information or people can be confused during records research, DNA doesn’t lie.
I have been lucky in the aspect that many of my known relatives have tested with one of the various DNA testing services. It has provided me the opportunity to evaluate various connections and how genetics have passed down through different lines. There have been several revelations have have been interesting to me.
By the numbers.
I share more DNA with my maternal uncle than I do with my paternal half-sister. Both relationships match up for the correct range of shared centimorgans but I found it interesting that I share 300 more cm’s of DNA with an uncle than I do with my half-sibling.
By the chance of recombination in DNA my half-sibling and I both inherited vastly different portions of DNA from our shared parent. I share a heavy dose of DNA with relatives of our shared grandfather, she shares a heavy dose of DNA with our shared grandmother. Our shared DNA is approximately 1500 cm’s.
In fact I share so little DNA with some of the relatives that she matches up to that I would be left to question the validity of those relationships to me if not for her test results.
Don’t use just one test when coming to final conclusions. Just like with traditional genealogy research, it is important to build a case based on various pieces of information and not just one tiny snippet that fits a theory.