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Subject:	Re: DNA from different parts of the anatomy
From:	Deborah Duval <[log in to unmask]>
Reply To:	Conchologists List <[log in to unmask]>
Date:	Mon, 9 Jul 2007 08:13:48 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (38 lines)

Thanks, Doug.

Debbie

>>> Stemke Douglas <[log in to unmask]> 7/6/2007 6:13 PM >>>
I'm not that person, but can certainly answer part of the question. There are a few cases at least in humans, where 'different parts of the anatomy' could result in different human DNA. First many immune cells are the results of rearrangements and deleations so technically they are different (T-cells and B-cells anyway). Obviously sex cells, the results of meiosis, will have 'different' DNA as a result of recombination and reduction in the chromosome. The third one is rare, but in a VERY few number of human Chimeric individuals are known to exist, apparently one individual the result of a fusion between, what I would guess are two fertalized eggs. These individuals will have two completely different types of DNA from different tissues. Otherwise the remainder of the DNA should be the same.

Don't know if that helps.

Doug

Deborah Duval <[log in to unmask]> wrote:
Sorry to revisit this thread, but would whomever posted the comment about DNA from different parts of the anatomy of a given animal yielding different results, and therefore not necessarily solving all of the specie delimna, please show yourself so that I can pursue this a little further privately.

Thanks.
Debbie Duval

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