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Biology-Related Homework Help Genetics and Developmental Biology Topic started by: J2Thurst on Feb 12, 2018



Title: Why do we expect that postzygotic isolation will evolutionarily precede prezygotic isolation in the ...
Post by: J2Thurst on Feb 12, 2018
Why do we expect that postzygotic isolation will evolutionarily precede prezygotic isolation in the speciation process?
 
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Title: Why do we expect that postzygotic isolation will evolutionarily precede prezygotic isolation in the ...
Post by: traviswa on Feb 12, 2018
Postzygotic isolation is fitness-reducing in that mating effort is wasted on offspring that have low survivorship or fecundity. Natural selection should act to reduce this waste by favoring, for example, mate recognition signals or spatial or temporal partitioning that prevent such matings in the first place.