Sex chromosomes

Recent articles

Photograph of a cardinal with male-typical red feathers on one side and more drab, female-typical feathers on the other.

What birds can teach us about the ‘biological truth’ of sex

Part of our job as educators is to give students a deeper understanding of the true diversity of sex and gender in the natural world.

By Nicole M. Baran
22 April 2025 | 7 min read

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Portrait of Raphe Bernier in front of a collage of a building, a chalkboard, a computer and human silhouettes.

Frameshift: Raphe Bernier followed his heart out of academia, then made his way back again

After a clinical research career, an interlude at Apple and four months in early retirement, Raphe Bernier found joy in teaching.

By Katie Moisse
20 February 2026 | 8 min read
Research image showing gene association.

Organoid study reveals shared brain pathways across autism-linked variants

The genetic variants initially affect brain development in unique ways, but over time they converge on common molecular pathways.

By Giorgia Guglielmi
19 February 2026 | 4 min read
Mouse father with pups.

Single gene sways caregiving circuits, behavior in male mice

Brain levels of the agouti gene determine whether African striped mice are doting fathers—or infanticidal ones.

By Natalia Mesa
18 February 2026 | 6 min read

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