# Life history variation is maintained by fitness trade-offs and negative frequency-dependent selection

> Research article (Proceedings of the National Academy of Sciences, 2018) · cited 86× · AI/ML

**Wikidata**: [openalex:W2798033754](https://www.wikidata.org/wiki/openalex:W2798033754)  
**Source**: https://4ort.xyz/entity/life-history-variation-is-maintained-by-fitness-trade-offs-and-negative-frequency-dependent-selection