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  #1  
Old 25th January 2018, 07:30 PM
harrigill harrigill is offline
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Join Date: Jan 2018
Posts: 2
Question Match, no match

How is it possible to have a genetic distance zero match with Y-67, yet not have a relationship show up at all in Family Finder for the same individual?
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Old 25th January 2018, 07:55 PM
MoberlyDrake MoberlyDrake is offline
mtDNA: T2b5 | Y-DNA: J-M172
 
Join Date: May 2010
Posts: 1,546
Assuming the individual has done the Family Finder test, the reason is that the Y-DNA relationship is so far back that the two individuals share no autosomal DNA or the autosomal DNA they share is below the minimum threshold of Family Finder.

You get a RANDOM 50% of your autosomal DNA from each parent, 25% from each grandparent, 12.5 from each great-grandparent, etc. Go back a few more generations and you get no DNA from some of your ancestors due to the randomness of inheritance.

Y-DNA, on the other hand, is passed from father to son virtually unchanged for hundreds of years.
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Old 25th January 2018, 08:32 PM
harrigill harrigill is offline
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Thanks, but with the genetic distance of zero on the Y67 test, the TiP report shows a 90% probability of being related within 4 generations. I guess we're in that 10%....
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Old 26th January 2018, 02:06 AM
Fern Fern is offline
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Join Date: Mar 2017
Posts: 119
Are you in contact with your Y-DNA 67 match? If you both uploaded your Family Finder data to Gedmatch, you could then do a one-to-one Gedmatch comparison to see how closely (or not) you match.
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