Genetics

Clues from fish diversity suggest that interbreeding between species could be a major mechanism of fast speciation.

Genetically identical bacteria should all be the same, but in fact, the cells are stubbornly varied individuals.

For more than six decades, the influential biologist Edward O. Wilson has drawn connections between evolution, ecology and behavior, often sparking controversies inside and outside of science.

Biologists have demonstrated for the first time that a controversial genetic engineering technology works, with caveats, in mammals.

Renee Reijo Pera has spent decades uncovering how the timing of embryonic development contributes to health and disease.

A unique neurological “functional fingerprint” allows scientists to explore the influence of genetics, environment and aging on brain connectivity.

Evolution may have coopted an ancient metabolic mechanism to set social insects on the path toward one of the most puzzling behaviors found in nature.

New results emerging from graph theory prove that the way a population is organized can guarantee the eventual triumph of natural selection — or permanently thwart it.

Computer code serves as a useful analogy for what our genes do, but the complexity and messiness of life go well beyond simple analogies and mathematical models.