On Monday 19 May 2003 09:21 pm, Stone Gordonssen wrote:
> >None whatever. Even Richard Speck turned out to be plain old XY.
> >There are no marked differences between XYY and XY, because in any
given
> >cell with more than one X chromosome, one of them is switched off at
> >random.
> >
> >This leads to some interesting patterns, like calico cats (randomly
> >black or reddish hair in each cell, depending on which X is
activated) --
> >there are no male calicos for that reason, since all their cells are
> >alike.
>
> Cool. Thanks. I knew of the calico beinbg sexlinked to female cats,
but
> didn't realize that it was manifest via one chromosome of each X-pair
> randomly switching off.
That's why when they cloned a calico cat, the resulting kitten was a
gray tabby. The switching mechanism in clones doesn't behave properly
yet.
--
Elyse Grasso
The World of Cherani Station
www.data-raptors.com/cherani/index.html
Cherani Tradespeech
www.data-raptors.com/cherani/tradespeech.html