Sarah L Meyer
Hi David, those are the number of markers that they test on the Y
chromosome. They test either 12,25,37, 67 or 111 locations (markers) and
count the number of repeats. The more markers that you test (they start
with 37 now) and the more that you match, the better the estimate of the
time of the common ancestor. FTDNA is the only company doing this test at
the current time.
From: "David Goldman" <firstname.lastname@example.org>
Date: Sun, 30 Jun 2019 09:43:57 -0400
Greetings, all. Could anyone explain what the meaning is of such terms such
as the following that are reported when receiving notification of matches:
Y-12, Y-25, Y-37.