DNA Data Spreadsheet - DNA Group 10
This spreadsheet was last updated March 16, 2010.

Reference Notes
- Proper Analysis of DYS389-1 & DYS389-2 Marker Mutations.
In analyzing the marker values in the table representing this DNA Group, it
is important to remember the following in your analysis of loci DYS389-1 and
DYS389-2 matches and mismatches.
- The loci DYS389-1 and DYS389-2 are two legitimate lengths of DNA but
move in tandem.
- DYS389-1 refers to the length of only one portion of the DYS389 marker.
- DYS389-2 refers to the total length of the DYS389 marker. Therefore,
when there is a one step mutation at DYS389-1, it will also appear to be
in DYS389-2.
- When comparing one individual to another, if the values for two
individuals differ by one repeat at DYS389-1, that represents a one-step
mismatch.
- If the values for the same two individuals differ also by one repeat at
DYS389-2, then it should only be counted as one combined mutation for
DYS389-1 & DYS389-2.
- If the marker values for two individuals differ by one repeat mismatch
at DYS389-1 and a two repeat mismatch at DYS389-2, then it should be
counted as two separate mismatches or mutations.
- There is another and potentially even more confusing situation that
could occur at marker DYS389. If the marker values for two individuals
differ by one repeat mismatch at DYS389-1 and then a perfect match at
DYS389-2 for these same two individuals. This should be counted as two
separate marker mismatches since the value mismatch at DYS389-1 was offset
by a mutation in the opposite "direction" from the value found
at DYS389-2 and appears to cancel out the mutation that occurred at
DYS389-1.
- However, keep in mind there can be a mutation at DYS389-2 that will not
affect the length found at DYS389-1.
End of Reference Notes
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Copyright
© March 2010 by
Ronald G. Lindsay, all rights reserved with the composite database content.
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