Relationship predictions from Ped-sim!

The first ever relationship prediction tools from a peer-reviewed data source are here! One is a traditional relationship prediction tool and another is for known or suspected double cousin relationships. More recently, a percentage input box has been added, which makes the Orogen predictions the first ever to include X-DNA (for 23andMe data).

GEDmatch incorporates the relationship predictor from dna-sci.com!

You can read here about how GEDmatch is now using DNA-Sci relationship prediction probabilities on its One-to-Many tool.

A three-part series on using the kits of multiple tested relatives

Almost everyone who has siblings tested and used them in a WATO tree was doing that wrong until recently. I explore several methods and find that the best methods are ones that approximate the amount of a parent’s DNA that the children have, when combined:

Part 1: The Theory

Part 2: Testing the Methods

Part 3: Empirical Data

The first ranges of X Chromosome DNA

If you’re interested in X Chromosome DNA, be sure to check in with this article from time-to-time as I update it with data for additional relationships. This is the only place to find shared X-DNA ranges. Data for great-aunts/uncles, half-great-aunts/uncles, and 2nd cousins once removed are now available.