GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2009-12 > 1260212793


From: "Joe Fox" <>
Subject: [DNA] real relatedness or fluff and fairytales?
Date: Mon, 7 Dec 2009 11:13:46 -0800


Thomas,

I have a 23andMe match with another person that shows on Family Inheritance as being across the centromere in chromosome 18. Jim McMillan has shown this match as: Start 18011894266, Size 10418811, cM 9.457 and SNPs 1457. From a genealogical standpoint any connection seems extremely remote. Should I take this seriously or not?

Joe Fox

From:
[mailto:] On Behalf Of Thomas Krahn
Sent: Sunday, December 06, 2009 2:17 PM
To:
Subject: Re: [DNA] real relatedness or fluff and fairytales?

Note that 23andMe also ignores the centromere regions completely.
This makes the calculations easy for them but may introduce some severe
length misinterpretations when a haploblock stretches over the centromeric
region.

Joe Fox
Lafayette, CA

This thread: