Genetics

eastern grey squirrel

When Squirrels Meet the Delmar Divide

Segregation in St. Louis, Missouri, is shaping the genetics of the city’s eastern gray squirrels.

Latest in Genetics
An image of a heath hare
Splitting Hares

In Sweden, researchers working to save a rare variety of mountain hare think conservation should focus on genes, not just species.

The brook trout, a species native to the eastern United States, made its way across the west in the hands of settlers looking to recreate a small, living piece of their adopted homeland. Photograph by Nick Hawkins
The Tale of the Trojan Trout

Can the introduction of a modified invader save the West’s native fish?

butterfly
Lens of Time: Building a Butterfly Wing

Scientists open a window—literally—into a process that normally remains hidden deep inside a butterfly’s chrysalis.