GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2006-09 > 1157136410


From: Linda R Romero <>
Subject: Re: [GENEALOGY-DNA] INDENTICAL TWINS
Date: Fri, 1 Sep 2006 13:46:51 -0500
References: <mailman.3205.1157131775.28309.genealogy-dna@rootsweb.com>
In-Reply-To: <mailman.3205.1157131775.28309.genealogy-dna@rootsweb.com>


I would be greatly surprised if they were really identical twins.
They sound like fraternal twins who may look alike. What proof is
given that they are identical? DNA? The old fashioned way to tell
was if there was one placenta or two. Of course, that was not
foolproof either for many reasons.

I have identical twins and identical twins run in my family. Some
take part in the twin studies at the University of Minnesota. As far
as I know, the only way to tell if they are identical is that they
supposedly have identical DNA. Not even fingerprints will be identical.

If identical twins are found without identical DNA, I'm sure the
Univ. of Minnesota would be greatly interested.

Linda


On Sep 1, 2006, at 12:29 PM, wrote:

> Message: 3
> Date: Fri, 1 Sep 2006 9:22:57 -0700
> From: <>
> Subject: [GENEALOGY-DNA] Identical Twins
> To:
> Message-ID: <>
> Content-Type: text/plain; charset=utf-8
>
> The local head of the FHC has a husband who is on SMGF. As is his
> identical twin. We're not sure which is which at SMGF. Most of us
> would say "Of course not--they're identical." Well their profiles
> are identical for those sites that the one brother has
> demonstrated. That one brother is missing 5 markers from his
> brother. I haven't continued too much to try to figure out what
> all the variances from the default settings are; I figured out 5
> non-default values (394, 438, 439, 464 1B07 are all one from the
> default ) but 2 of the remaining five missing markers are ones
> changed from the default and they don't seem to be any standard
> values (DYS 449 and 458 as I recall). I'm wondering if the one's
> zygote had undergone some recombinant event to something the
> primers don't pick up. Any of our experts on recombination want to
> check it out--maybe find out something about identical twinning and
> recombination? They're under Phillips in a surname search; they
> come up near the top!
> with default values; and they're the ones with a patrilineage
> from TN back to NC and back to (GB as I recall).
>

This thread: