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

Explore more from The Transmitter

Finding the Rett syndrome gene and ways to fix it

Kevin Mitchell talks with Huda Zoghbi about her work identifying the MECP2 gene, its role in the brain and therapies to address its dysfunction.

By Kevin Mitchell
21 September 2026 | 67 min watch
Hand holding a vial of microplastics.

Measuring plastic in the brain: Improving, but incomplete

Meanwhile, researchers are publishing papers without “sufficient quality control,” says analytical chemist Dušan Materić.

By Amber Dance
18 September 2026 | 9 min read
Calendar with deadline.

Incredible shrinking grant deadlines at the BRAIN Initiative

“A month is crazy,” says one former recipient, referring to a new funding opportunity’s timeline.

By Brendan Borrell
17 September 2026 | 4 min read