In article <581l57$pj9 at netty.york.ac.uk>,
cs132 at york.ac.uk (Chris) writes:
>This is a question that no one at York university seems able to
>The question is as follows:-
>>In females one X chromosome stays active and codes for proteins where
>as the other chromosome is (supposedly) inactive and forms the dense
>bar body which can be visibly seen under an optical microscope.
>>Are the inactive X,s truelly inactive?
AFAIK, only some sections of the X chromosome are inactivated. This means
that some genes on the X escape inactivation. I think it's also possible
for mutations to occur that affect the inactivation of particular genes.
>Or something entirely different.
Quite possibly! :-)
Phil Davey [E-mail pd at mole.bio.cam.ac.uk]
Just because you're smart, doesn't mean you can't act stupid....