Nature, Published online: 18 July 2025; doi:10.1038/d41586-025-02244-z
Families with three or more boys, for example, are more likely to have another boy than a girl as the next child.
Nature, Published online: 18 July 2025; doi:10.1038/d41586-025-02244-z
Families with three or more boys, for example, are more likely to have another boy than a girl as the next child.
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