Time to Most Recent Common Ancestor for
Steven M Gates and William A Gates
Authored August 21st, 2021
Family Tree DNA has provided a table to translate “Genetic Distance” to years between two individuals. Steven and I share grand-parents Samuel Gates and Ruth Olmsted. His grandfather Samuel and my grandfather Noah were sons of Samuel and Ruth.
Using the TMRCA table below we fall on the column for STR Y-111 test with four genetic steps between us (row 4). The range 553-103 ybp (“years before present”) with I assume a mean of 283 is a starting point. Samuel and Ruth were married in 1758, so subtracting that from the present, 2021 yields a result of 263 ybp (and their first child Samuel). Noah was born about 1766.
This calculation result is just about where we would expect it to be and very close to the mean of 283 ybp. It is further borne out by genealogical findings of Elmer Gates, and my own secondary verification of Connecticut vital records.
Our estimated haplogroup from STR is R-M269, which can be refined by Big-Y700 SNP testing.
[The TMRCA image, above is from FTDNA.]
%20i276%20p209.png)
No comments:
Post a Comment