Y-DNA Surname Project
  • 220 members

About us

Understanding our results pages – a primer

FTDNA typically provides two types of charts for us to display project members’ detailed STR results: classic and colorized.

You might find the classic chart easier to read when scanning results for kit numbers, earliest known ancestors, countries of origin, or haplogroups. In contrast, the colorized chart provides more detail, including minimum, maximum, and modal values within each subgroup. In addition, markers that differ from the modal values are highlighted and color coded, enabling more detailed analysis. 

Be sure to read the explanations at the top of each chart, and take advantage of the links to go directly to educational articles on understanding test results. Consider using the drop downs to sort by the number of STRs tested when you need to limit the data to more informative testing levels, or to fit all of our project tests on one page. Finally, you can search the entire chart using any one of five options: kit number, paternal ancestor name, country, haplogroup, or subgroup.

Remember that tests that report 12, 25, 37, 67, or 111 markers are STR-only tests, while SNP panels are SNP-only tests. Big Y tests (Y500 or Y700) report both STRs and SNPs.

Diving into Y-DNA research can be challenging, but extremely rewarding. If you have questions, please post them to our Activity Feed if they are more general in nature, or reach out to our administrator via email with specific questions. And don’t forget to join in on the discussions on FTDNA’s Y-DNA Facebook group, or on Facebook pages for any haplogroup projects you might have joined.

Happy researching!


EKA – earliest known ancestor(s)

FTDNA – Family Tree DNA

SNP – single nucleotide polymorphism

STR – short tandem repeat