GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2002-10 > 1036016640
Subject: Re: [DNA] 12 vs 25
Date: Wed, 30 Oct 2002 17:24:02 EST
In a message dated 10/30/02 1:01:33 PM Pacific Standard Time,
> that a 12 Marker DNA might indicate that people have a common ancestor, but
> that the 25 Marker DNA is more accurate? Or is it that the 25 goes back
> many more generations than the 25? (As you can tell, I'm new to this
> list.) --Donnan Berry.
A 12 marker test will show spurious relationships, identical patterns shared
by unrelated men, more often than a 25 marker test does. Also, the time back
to the most recent common ancestor is longer with 12 markers or shorter with
25. Some people do not place much value on the MRCA number.
Grant W. Johnston, Chico, CA "The good thing about being self-employed is I
only have to work on days with a Y in them."