Microbial cells do not live in isolation in their environment, but rather they communicate with
each other using chemical signals. This sophisticated mode of cell-to-cell signalling, known …

Cooperation has been studied extensively across the tree of life, from eusociality in insects
to social behavior in humans, but it is only recently that a social dimension has been …

Greenbeard genetic elements encode rare perceptible signals, signal recognition ability,
and altruism towards others that display the same signal. Putative greenbeards have been …

Biology is marked by a hierarchical organization: all life consists of cells; in some cases,
these cells assemble into groups, such as endosymbionts or multicellular organisms; in turn …

Abstract Theory predicts rapid genetic drift during invasions, yet many expanding
populations maintain high genetic diversity. We find that genetic drift is dramatically …

Divisions of labor are ubiquitous in nature and can be found at nearly every level of
biological organization, from the individuals of a shared society to the cells of a single …

What processes account for the remarkable variation in form and function that we see in the
living world and how might they be similar or different between microorganisms and …

The self-produced biofilm provides beneficial protection for the enclosed cells, but the costly
production of matrix components makes producer cells susceptible to cheating by …

Cooperation has been essential to the evolution of biological complexity, but many societies
struggle to overcome internal conflicts and divisions. Dictyostelium discoideum, or the social …

We introduce and analyze a spatial Lotka-Volterra competition model with local and
nonlocal interactions. We study two alternative classes of nonlocal competition that differ in …