Proceedings of the National Academy of Sciences: Many frogs can be either green or brown—two colors that can help them stay hidden depending on their environment. A study explores how evolution can maintain multiple color morphs for millions of years through long-term balancing selection. In PNAS: www.pnas.org/doi/10.1073/...

Many frogs can be either green or brown—two colors that can help them stay hidden depending on their environment. A study explores how evolution can maintain multiple color morphs for millions of years through long-term balancing selection. In PNAS: www.pnas.org/doi/10.1073/...