This is a preview. Log in through your library . Abstract The second-to-fourth digit ratio (2D : 4D) is a well-studied sexual dimorphism that likely arises as a result of prenatal androgenic effects ...

A team led by Berkeley Lab faculty biochemist Daniel Minor has discovered how a protein produced by bullfrogs binds to and inhibits the action of saxitoxin, the deadly neurotoxin made by cyanobacteria ...

Competition and prédation are two of the most important factors structuring communities, and these interactions may be exaggerated when two closely related species share similar resource requirements.