Double Cousin Relationship Predictions from Ped-sim

Double cousin predictions are now updated with many more relationship types and a peer-reviewed data source Update, 3 Feb. 2023: You can now get relationship predictions from number of segments and total cMs. This tool often tells you the exact relationship for close...
A Banner Year for DNA-SCI.com

A Banner Year for DNA-SCI.com

It will be hard to capture all of the discoveries that have been made and posted at this site in the past twelve months. A year ago I was using a very basic natural model of genetic inheritance. I had been publishing averages and ranges of shared DNA for relationships...
3/4 Siblings: You Can Tell the Difference

3/4 Siblings: You Can Tell the Difference

We can now easily differentiate between 3/4 siblings and full-siblings over 94% of the time Three-quarter siblings have been confounding genetic genealogists for years. The problem is that their shared DNA overlaps significantly with other sibling types. And, while...