Add Your Surname Project Data and Comments to Kerchner's
Surname Projects Y Chromosome Y-STR Haplotype Mutation Rate Study and Log
Project Started: 7 January 2005
Note: One must be able to determine the Deduced Ancestral Haplotype for the Most Recent Common Ancestor (MRCA)
for the Panels and Haplotype Sizes for the related males in the group or cluster you are entering into this Log.
And/or we must be able to unambiguously determine the number of Unique Mutations Events being observed in the cluster or group.
To determine that you most know the traditional genealogy relationships for the related males tested
back to the Most Recent Common Ancestor (MRCA) for the data being submitted to the Log.
Also Important: You may have deduced the Ancestral Haplotype at 37 markers, but do not have enough data to do it at 67 markers.
In that scenario you would only enter the mutation rate data for the 37 marker panels and haplotype sizes.
In the future if you get more data and can deduce the 67 marker Ancestral Haplotype you can re-enter your entry and I can delete the prior one.
If you need help with deducing the ancestral haplotype, contact me by email.
To use this log you should be a Y-DNA Surname Project Coordinator with Y-DNA test results for related males. You must
know the common male ancestor from traditional genealogical research and have proven relationships for the males
which are being included in the data and calculations used being submitted into this Log in order
to sum up the number of unique transmissions events and the number of unique mutations. This usually requires that you
have deduced the exact ancestral haplotype for the common male ancestor or have a very good estimate of what it is to use
as a reference point to calculate the number of Unique Mutations Events in the descendants tested.
This is not a general purpose query page. Do not post general queries. They will be deleted. This log is intended to
collect calculated data for Y-STR Haplotype Average Mutation rates from various Y-DNA surname projects
in order to better estimate what the overall average Y-STR mutation rate is and to develop a histogram or scattergram
to plot the diversity of haplotype average mutation rates for surname projects. The Y-STR haplotype average
mutation rate appears to vary considerably from one male line surname project to another. Current thinking has been that
this is all due to statistical aberrations of one single common underlying average muation rate. I have hypothesisized
a new Y-STR male specific average mutation rate model to explain the variances seen in average mutation rates from project
to project. See this hypothesis link for more details on that.
Thus, in addition to collecting the data in one place for the benefit of all Genetic Genealogists, I will use the data collected in this project to test my hypothesis of male line specific Y-STR haplotype average mutation rates. In addition this project will collect the surname muation rate data in one place to better document this phenomena being observed anecdotally by various genetic genealogists. Is there a male line specific Y-STR average mutation rate or is it one size fits all? We will see which model fits best. It will then be up to the micro-biologists and geneticists to figure out what the underlying causal mechanism is, if there is a male line specific Y-STR average muation rate. It is best to print out this form on paper as a worksheet, obtain and calculate the needed information to enter, and then come back to this page to enter it. We Genetic Genealogists can make a contribution to the body of knowledge about Y-STR mutation rates. Synergy at Work!
What is the Y Chromosome STR (Y-STR) Haplotype Average Mutation Rate in a Surname Project?
Descent Tree Showing Descent from Most Recent Common Ancestor and Counting Unique Transmission Events (births).
Counting Unique Transmission Events (UTEs) and Counting Unique Mutation Events (UMEs)
from the Most Recent Common Ancestor (MRCA) in a Genetic Genealogy Surname Project
Read Prior Log Book Entries for Examples
This Study and Log Provided Courtesy of Charles F. Kerchner, Jr., P.E. (Retired). Synergy at Work!
Note: The comment field provided in the Add Entry Form has automatic end-of-line "line-wrap" feature enabled, as is used in most word
processors, so please do not press the [enter] key when you near the end of
a line. Just keep typing and your word will wrap around to the next line
automatically. Please only press the [enter] key at the end of a paragraph
or to provide a deliberate hard return and line feed for spacing reasons.
This will save me editing time and disk storage space. Thank you.
Another special request from the webmaster. I encourage your comments and
remarks. But, let me point out again that this is not a query page. Please do not
post "searching for" queries or commercial advertising of any type in this log.
Also keep your comments relevant. I hereby give notice that I reserve the right
to edit comments deemed unsuitable for this forum. Thank you for your
consideration.
Copyright (c) 2005-2025
Charles F. Kerchner, Jr., P.E. (Retired)
All Rights Reserved
Created: 7 Jan 2005
Revised: 27 Jun 2025
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