How to Add Your Family Surname
Project’s Y-STR Haplotype Data and Comments
to Kerchner’s Y-Chromosome Y-STR Haplotype Observed Mutation Rates Study
and Log
Project Launched: 7 January 2005
Project
Announcement and Hypothesis
Overview and Discussion of
Y-STR Mutation Rates
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 (UMEs) 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 Most Recent
Common Direct Male Line Ancestor (MRCA) 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 (UTEs) and the number of
unique mutations. This usually requires that you have deduced the precise Ancestral Haplotype for
the common male ancestor or have a very good estimate of what it is to use it
as a reference point to calculate the number of Unique Mutations
Events (UMEs) 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 mutation rate. I have hypothesized 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 mutation 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 mutation 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 Y-STR Mutation
Rate Log Entries for Examples and Study Project Results Thus Far
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
Webpage Created: 07 Jan 2005
Webpage Updated: 15 Jul 2025
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