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Biology 17 Online
OpenStudy (anonymous):

Directional selection acts against: both extremes simultaneously in the variation of the trait the average or mean value for the population one of the extremes in variation none of these

OpenStudy (anonymous):

Hmm any guesses?

OpenStudy (anonymous):

not really

OpenStudy (anonymous):

I think its A I'm not quite sure though

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

Welcome

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