# O brother, where art thou? Investment in siblings for inclusive fitness benefits, not father absence, predicts earlier age at menarche

> Research article (Biology Letters, 2017) · cited 17× · AI/ML

**Wikidata**: [openalex:W2766037137](https://www.wikidata.org/wiki/openalex:W2766037137)  
**Source**: https://4ort.xyz/entity/o-brother-where-art-thou-investment-in-siblings-for-inclusive-fitness-benefits-not-father-absence-predicts-earlier-age-a