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Taylor Group R1b-075

This page is about the Taylor Y-DNA genetic family designated R1b-075, formerly designated R1b-15a.



Taylor Group R1b-075 Members

Kit #
Name Most distant known ancestor Hap
Score **
140158 Taylor Joseph Taylor (1755 ENG - ? ?) R-U106 77.9% 90.4%
174838 Taylor George Taylor (d 1801 Montgomery Co, VA) R-U106 58.4% 90.4%
175628 Taylor George Taylor Sr. (~1731 - 1801), See Taylors of Old Augusta County R-M269 58.4% 77.9%
*  Earliest = Most distant
** Score = TiP TMRCA probability @ 24 gen. (25 markers)

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About this Group

Members are invited to submit information about this genetic family.

Y-DNA Values

See http://www.familytreedna.com/public/taylorfamilygenes/default.aspx?section=yresults.

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Haplotype Rarity

Based on the values of the individual markers, the members of this genetic family score, on average, in the Average range. Their haplotypes are among the medium common 50%.

TiP Scores

TiP general

TiP Scores Explained

TiP (for "Time Predictor") is a utility provided by Family Tree DNA. It is accessible to all FTDNA customers with Y-DNA results who have matches listed within the FTDNA reporting windows. It is also available to project administrators for calculating the probabilities that any two project members share a direct paternal ancestor within up to 24 generations.

TiP is superior to most TMRCA calculators. Rather than assume an average mutation rate for all markers compared, TiP uses individual marker mutation frequencies. Because marker mutation rates vary significantly between markers, the TiP scores 

As we use it here, TiP is a truer and simpler measure of genetic distances between individuals than other metrics such as the number of markers in disagreement or a sum of the differences (sometimes called "genetic distance"). TiP boils the complexities down to one number.

The composite TiP score is an index of how closely a member matches the entire group. Generally, the member with the highest score is the central member.


Unless stated otherwise, TiP probabilities are from TiP version 1 (v1) in effect from August 1, 2012 to December 11, 2012. Another version was in effect from December 12, 2012 to January 17, 2013 and was replaced with version 3 (v3) on January 18, 2013. We are in the process of updating to v3. In the meantime, we've made some observations about how v1 and v3 compare:

Only one member of this group has tested to 37 markers. TiP scores for fewer markers are considered unreliable.

Genetic distance from other groups

The most closely-related other groups in Taylor Family Genes are

It is the 9th most closely related to R1b-04 with a 32% chance of sharing a common paternal ancestor within 24 generations.

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Revised 24 Jun 2015