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Archiver > GENEALOGY-DNA > 2005-12 > 1133473373


From:
Subject: Re: [DNA] Its name is IJ
Date: Thu, 1 Dec 2005 16:42:53 EST


In a message dated 12/01/05 12:00:52 PM Pacific Standard Time,
writes:

> YCC anticipated the possibility of discovery in the future of the
> supergroups like the clade combining N and O, and the new one combining I
> and J. The letters were not assigned to Haplogroups in orbitrary order: the
> ones which were considered likely to be related were placed next to each
> other, based both on STR facts and geographic distribution.

I didn't know that. (I assume you're talking about multiple haplogroups that
are shown on the same vertical line). The YCC site mentions a more mechanical
"rule" that appears to be a page layout algorithm:

"The tree was drawn as asymmetrically as possible by sorting the descendants
of each interior node so that the bottom-most descendant had the greatest
number of immediate descendants."

http://ycc.biosci.arizona.edu/nomenclature_system/results.html

I'm trying to think through whether your statement about relatedness follows
as a natural consequence of the page layout rule. Are you saying that we would
not expect to see a join of G and I, or M and P?

Ann Turner






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