Evolution seems to follow a script more often than expected. Researchers found that distantly related butterflies and moths ...

Butterflies and a moth species reused the same two genes, ivory and optix, to create similar warning colors over millions of ...

How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: the lines that eventually give rise to segments, organs, or markings like ...

Polyploidy, or whole-genome duplication (WGD), is a major mechanism of genome evolution across the tree of life and is particularly prevalent in plants, where it facilitates the evolution of new ...

This volume is based on the National Academy of Sciences' Colloquium on the Tempo and Mode of Evolution. The articles appearing in these pages were contributed by speakers at the colloquium and have ...