Fellman and Eriksson (2010) cited my suggestion that the sex ratio (proportion male) of monozygotic (MZ) twins is lower than that of dizygotic (DZ) twins (James 1975). Here I offer elaborations on and potential explanations for this.
CITATION STYLE
James, W. H. (2010). The sex ratios of monozygotic and dizygotic twins. Twin Research and Human Genetics, 13(4), 381–382. https://doi.org/10.1375/twin.13.4.381
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