STRs

STR Overview

STR (Short Tandem Repeat) mutations happen every 100 years or so on specific places of the Y chromosome. These mutations are passed from father to son. By analyzing the types of STR mutations men have in common, you can calculate their relatedness.

STR Spreadsheet

People with the R-Z16357 SNP have a fairly distinct STR signature. The following spreadsheet provides the STR values for all known R-Z16357 people. Because the STRs are somewhat different between the R-Z16343 and R-BY19970 child haplogroups, these are presented on separate sheets/tabs.

Numerous suspected R-Z16357 people who have tested to at least 67 STRs are also listed. These are all excellent candidates for Big-Y testing. Many known negative testers and other poor candidates are also listed. The SIG and GD values indicates how closely the record aligns with the R-Z16343 and R-BY19970 STR markers. SIG indicates alignment with the key/distinctive signature markers, and GD indicates the Genealogical Difference for all STR markers. A high SIG and/or low GD indicates a stronger match

R-Z16357 STRs Excel Spreadsheet

This spreadsheet is primarily based on an analysis conducted by Robert Casey. It uses his Binary Logistic Regression Model for determining the probability that STR testers will have a particular SNP.

The candidate testers in this spreadsheet are primarily derived from the R-L513, the Phillips, the Smith, and the Vaughan FTDNA projects. The Phillips Group 29 people and the Vaughan/Vaughn Orange Group people closely match the R-Z17911 STR signature and likely have this SNP. The Smith Group R-M269-16 people closely match the BY19970 SNP signature and likely fall in this haplogroup.

Additional Big-Y testers from the Phillips, Vaughn/Vaughan, and/or Smith STR groups would almost certainly create new, long branches down from their respective haplogroups. Additional testers are highly desired from these and other groups! There are certainly many people who have taken Y-DNA testing who have this STR signature, but have not yet been identified.