What determines a warbler's colors?

A new study has narrowed down the region of the genome that drives the black color in throat and face of warblers by studying the hybrid offspring produced when two species mate. The hybrids of golden-winged and blue-winged ...

Genetic origins of hybrid dysfunction

In a small pool nestled between two waterfalls in Hidalgo, Mexico, lives a population of hybrid fish—the result of many generations of interbreeding between highland and sheepshead swordtails. The lab of Molly Schumer, ...

Researchers confirm that narwhals and belugas can interbreed

A team of University of Copenhagen researchers has compiled the first and only evidence that narwhals and beluga whales can breed successfully. DNA and stable isotope analysis of an anomalous skull from the Natural History ...

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