Sex at birth is not always random — mum’s age and genetics can play a part

by | Jul 18, 2025 | Uncategorized | 0 comments

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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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