INTERPRETING GENETIC DISTANCE WITHIN SURNAME PROJECTS |
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25 Markers
Distance |
Relatedness |
Explanation |
0 |
Related |
Your perfect 25/25 match means you share
a common male ancestor with a person who shares
your surname (or variant). These two facts
demonstrate your relatedness. |
1 |
Related |
You share the same surname (or a variant)
with another male and you mismatch by only one
'point' on only one marker. For most closely related
and same surnamed individuals, the mismatch markers
are usually either DYS 439 or DYS 385 A, 385 B,389-1
and 389-2 from our first panel of 12 markers, and on
the following from the second panel: DYS #'s 458 459
a 459b 449, 464 a-d, which have shown themselves to
move most rapidly. The probability of a close relationship
is very high. |
2 |
Probably Related |
You share the same surname (or a variant) with another
male and you mismatch by two 'points' among the 25 markers
we tested. For most closely related and same surnamed
individuals, the mismatch markers are usually either DYS 439
or DYS 385 A, 385 B,389-1 and 389-2 from our first panel of
12 markers, and on the following from the second panel: DYS #'s
458 459 a 459b 449, 464 a-d, which have shown themselves to
move most rapidly. The probability of a close relationship is
good, however your results show mutations, and therefore more
time between you and the other same surnamed person. |
3 |
Probably Not Related |
You share the same surname (or a variant) but are off
by 3 'points' or 3 locations on the 25 markers tested. If
enough time has passed it is possible that you and another
distantly related family members' line each have had a mutation,
or perhaps 2. The only way to prove that is to test additional
family lines and find where the mutation took place. Only by
further testing can you find the person in between each of you...
this in 'betweener' becomes essential for you to find, and in
their absence the possibility of a match exists, but further evidence
should be pursued. |
4 |
Not Related |
21/25 is too far off to be considered related. Unlikely but
vaguely possible that the rule for ONLY “Probably Not Related” applies.
It is important to determine what set of results (or haplotype) most
typifies 'most' members of the group you are close to matching. You may
be 21/25 with an individual, but 23/25 with the center (most common)
of the group, and your potential relatedness to him is through the center
of the group. |
5 |
Not Related |
20/25 You are not related and the odds greatly favor that you have
not shared a common male ancestor with this person in excess of 2,000 years. |
6 |
Not Related |
19/25 You are not related and the odds greatly favor that you have
not shared a common male ancestor with this person in excess of 5,000 years. |
>6 |
Not Related |
You are totally unrelated to this person. |
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