Article ID Journal Published Year Pages File Type
6371135 Journal of Theoretical Biology 2012 4 Pages PDF
Abstract
► National annual sex ratios (proportions male) at birth remain stable, close to 0.5. ► There is no established explanation for this stability. ► Sex ratios also show substantial variability with many variables. ► Hypotheses on the causes of this variability have been offered by Catalano and James. ► Their two hypotheses are mutually compatible.
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Related Topics
Life Sciences Agricultural and Biological Sciences Agricultural and Biological Sciences (General)
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Hypotheses on the stability and variation of human sex ratios at birth
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