Go Back   Family Tree DNA Forums > General Interest > DNA and Genealogy for Beginners

DNA and Genealogy for Beginners Everything you wanted to know about DNA and Genealogy but didn't know where to ask. This board is open to customers and visitors.

Thread Tools Display Modes
Old 26th April 2015, 04:35 PM
LydiaGaebe LydiaGaebe is offline
FTDNA Customer
Join Date: Dec 2013
Posts: 16
Question DNA and Kleinfelter's Syndrome & "XXX" and Other "X" Questions.

Just curious how FTDNA and the other Genealogy DNA testing service handle the occasional person with an extra "X" chromosome.

As you know there is a rare chromosomal disorder that affects males called Kleinfelter's syndrome where the man has "XXY" rather than "XY."

Also the occasional woman will have an "XXX" abnormality. (The females with XXX are usually fertile)

Are the testing companies prepared for the occasional sex chromosome variant?

Can the testing companies separate the extra "X" from the other and tell if the extra came from the mother or father?

And then there's Turner Syndrome where the person has only one "X". Does the "X" in that case come from the mother or father? My guess, the mother.
Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
What is ybp? And the "formed" and "TMRCA"-difference? Yde DNA and Genealogy for Beginners 8 5th March 2015 09:54 AM
Why doesn't "known" plus "non-matching known" snps add up? sjadelson BIG Y and SNP Discovery 2 26th February 2015 05:37 PM
Ad explanation to "My Matches" list below "Haplotree" East-Iberian Features Requests & Bug Reports Area 0 6th January 2010 11:57 PM
"DiMaggio" coming from the Albanian name "Dhima" jr76x DNA and Genealogy for Beginners 12 10th May 2008 09:27 PM

All times are GMT -5. The time now is 05:36 AM.

Family Tree DNA - World Headquarters

1445 North Loop West, Suite 820
Houston, Texas 77008, USA

Phone: (713) 868-1438 | Fax: (832) 201-7147
Copyright 2001-2010 Genealogy by Genetics, Ltd.
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.