COULD regeneration ever produce a gender change?

[Stevil2001]

Most tie-ins have suggested that regeneration is an artifically engineered process.

IIRC, the story 'Horror Of Fang Rock' has a bit where the Doctor and Leela discuss the Rutan's shape changing abilities. It is suggested the process is similar to Time Lord regeneration, except that the Rutan had to learn it. There is an implication that regeneration is natural to Time Lords.

Not really-- the Doctor never had to learn regeneration, unlike the Rutan, because he was born with the ability, it having been engineered into the species long ago.

 

[Blamo]

I'd say it could happen but only under special circumstances, like the regeneration going out of control.

Female Doctor + Rose + Martha + Donna = TEH AWESOMENESS!

I'd like to make an amendment to that:-
An attractive and convincing female Doctor + Rose + Martha + Donna = TEH AWESOMENESS!

 

[wamdue]

I'd say it could happen but only under special circumstances, like the regeneration going out of control.

what I think needs to happen would be for a male timelord to regenerated whilst in a room with oestrogen in the form of gas. (there has been dodgier science on Doctor Who before)