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

Research image showing more glucose in the bird retina than the bird brain.

Inner retina of birds powers sight sans oxygen

The energy-intensive neural tissue relies instead on anaerobic glucose metabolism provided by the pecten oculi, a structure unique to the avian eye.

By Federica Sgorbissa
18 February 2026 | 4 min read
Illustration of a synapse.

Neuroscience needs single-synapse studies

Studying individual synapses has the potential to help neuroscientists develop new theories, better understand brain disorders and reevaluate 70 years of work on synaptic transmission plasticity.

By Seth Grant
17 February 2026 | 5 min read
Research image visualizing brain region connectivity in autistic girls compared to autistic boys.

New insights on sex bias in autism, and more

Here is a roundup of autism-related news and research spotted around the web for the week of 16 February.

By Jill Adams
17 February 2026 | 2 min read

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