# Drift and Directional Selection Are the Evolutionary Forces Driving Gene Expression Divergence in Eye and Brain Tissue of <i>Heliconius</i> Butterflies

> Research article (Genetics, 2019) · cited 37× · AI/ML

**Wikidata**: [openalex:W2970811084](https://www.wikidata.org/wiki/openalex:W2970811084)  
**Source**: https://4ort.xyz/entity/drift-and-directional-selection-are-the-evolutionary-forces-driving-gene-expression-divergence-in-eye-and-brain-tissue-o