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Re: KillieTalk Digest V3 #70



> In an evolutionary sense neither would make much sense, since if she's past
>  breeding age, there's no way selection could ever operate on a sex change.

No, no, no...  you miss my point.  The female changes to male APPEARANCE, not 
functionality.  That way the males do not see her as a mate and do not waste 
time chasing her.  I have seen old female swordtails develop swords many 
times.  they never breed again, nor do they chase females.  They just get 
left alone.

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