I do understand that a 21/25 match doesn't count for much in y-dna paternal line testing, but this is in fact the closest match i have on the entire database. So i hope you'll forgive me for reading a little more on the match..
I did a 67 marker test, and thus far, only the first 25 have returned back to me, and i've just been doing a preliminary examination of the results. I've been wondering about the possibility that me and this match sharing a common ancestor. If we do have a common ancestor, then how far back would that have been?
Here's the comparison chart provided by FTDNATIP:
"In comparing 12 markers, the probability that Mr. xxxxxx and yyyyyy shared a common ancestor within the last...
Generations/Percentage
4 6.67%
8 18.94%
12 32.64%
16 45.68%
20 57.13%
24 66.71%
28 74.48%"
Our mismatched markers are mostly found on those with faster mutation rates:
DYS: mine/his
439: 12/11
458: 18/17
449: 31/33
464: 12-12-14-15/12-14-15-16
QN: How many generations back will a perfect match of 25 and 37 markers bring you? Does it differ from one Haplogroup to another? (i've seen a two individuals from Haplogroup G having a 25/25 match. The paper trail proves their MRCA is about 20 generations back)
Here's hoping someone experienced in the J2 or G haplogroup can provide some answers. Thanks!
I did a 67 marker test, and thus far, only the first 25 have returned back to me, and i've just been doing a preliminary examination of the results. I've been wondering about the possibility that me and this match sharing a common ancestor. If we do have a common ancestor, then how far back would that have been?
Here's the comparison chart provided by FTDNATIP:
"In comparing 12 markers, the probability that Mr. xxxxxx and yyyyyy shared a common ancestor within the last...
Generations/Percentage
4 6.67%
8 18.94%
12 32.64%
16 45.68%
20 57.13%
24 66.71%
28 74.48%"
Our mismatched markers are mostly found on those with faster mutation rates:
DYS: mine/his
439: 12/11
458: 18/17
449: 31/33
464: 12-12-14-15/12-14-15-16
QN: How many generations back will a perfect match of 25 and 37 markers bring you? Does it differ from one Haplogroup to another? (i've seen a two individuals from Haplogroup G having a 25/25 match. The paper trail proves their MRCA is about 20 generations back)
Here's hoping someone experienced in the J2 or G haplogroup can provide some answers. Thanks!

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