Sex allocation: At the females' whim.
Experimental studies of wild birds suggest that females have a previously unappreciated ability to control the sex ratio of their offspring in response to variation in sex-specific fitness benefits.
Department of Animal Ecology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18d, S-752 36, Uppsala, Sweden. ben.sheldon@zoologi.uu.se
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D000818:Animals; D001717:Birds / Q000502:physiology*; D006801:Humans; D008297:Male; D019849:Sex Determination Processes; D012737:Sex Factors; D012744:Sex Ratio