"Mark Lipton" > wrote in message
...
> This is mind boggling if true: the genome of the skin tissue is
> DIFFERENT from that of the flesh. That implies that either a mutation
> takes place during the development of the grape, or that the skin and
> the flesh are derived from two different germ lines. Neither
> explanation makes much sense to me...
>
> Mark Lipton
>
> BTW, Googling for the phrase "natural tissue chimera" turned up nothing.

There was an episode of CSI recently where this phenomenon, although in a
_human_, was central to the story. The killer's DNA from a mouth swab was
different from the DNA in his blood (which was the same as found at the
crime scene). It stumped Grissom for a while, but he eventually figured it
out.

I wasn't sure this was a real phenomenon, but a Copernic search on
chimera+DNA turned up this link:
http://www.ananova.com/news/story/sm...ery.genet ics

It gets even weirder with this one:
http://www.nature.com/nsu/020429/020429-13.html which mentions a phenomenon
called mosaicism.

Tom S