Okay,
Final version
Y-DNA markers rarely indicate health or medical issues. Nulls or missing DYS
markers by themselves are quirks or unique events in the Y-DNA markers
tested with no known medical or health issues. But on very rare occasions
where the DYS-464a,b,c,d marker value should be listed, but posted with
numerical zeros ( 0-0 ) or nulls by FTDNA, it could imply sterility
indirectly because of a missing DAZ Y-chromosome gene. This, of course, is
only after confirming the lab results. The Carpenter Cousins Project has had
only one (1) such DYS464a,b,c,d null result in over 400 Y-DNA tests. Again,
such a result with DYS464a,b,c,d is relatively rare because many projects
never record such an event.
In the case of a missing DYS marker, the zero ( 0 ) or null would be better
listed as a dash ( - ) indicating the DYS marker was tested but confirmed as
not found. In the Carpenter Cousins Y-DNA Project, thanks to our DNA Guru
John Chandler, we use the dash ( - ) to avoid any confusion over the
perceived measured numerical value of zero ( 0 ).
John R. Carpenter
La Mesa, CA USA
Carpenter Cousins Project
http://carpentercousins.com
-----Original Message-----
From: John Chandler
Sent: Thursday, March 30, 2017 2:21 PM
To: carpenter(a)rootsweb.com
Cc: CarpenterCousins(a)yahoogroups.com
Subject: Re: [CARPENTER] Carpenter Cousins Y-DNA Project - health issues &
project overview 4
On Thu, Mar 30, 2017 at 11:21 AM, John R Carpenter <jrcrin001(a)cox.net>
wrote:
Y-DNA markers rarely indicate health or medical issues. Nulls or
missing
DYS
markers by themselves are quirks or unique events in the Y-DNA markers
tested with no known medical or health issues. But on very rare occasions
where the DYS-464a,b,c,d marker value should be listed, but posted with
numerical zeros ( 0, 0, 0, 0 ) or nulls by FTDNA, it could imply sterility
Yes, that's much better. The only quibble is that FTDNA actually posted
just two zeroes, not four, in the one case we have seen of missing DYS464
altogether. This makes sense in a quirky sort of way, since FTDNA makes
a practice of posting the actual number of values seen when that number
differs from four, and they have apparently never convincingly detected only
a single copy of DYS464.
John Chandler