New chromosome-level evidence suggests Medicago evolution followed a more complex, and surprising path, than previously ...

Imagine a photograph of your great-grandparents, grandparents and parents side by side. You’d see a resemblance, but each generation would look distinct from its predecessors. This is the process 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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Unfurling fiddlehead of the Christmas fern (_Polystichum acrostichoides_). Jacob S. Suissa, CC BY-ND Imagine a photograph of your ...