Some of the mutations that occur during influenza evolution can only be tolerated in conjunction with other mutations that increase the stability of a viral protein.

A gene that codes for a transcription factor that is involved in lipid and carbohydrate metabolism also has a role in the regulation of circadian rhythms.

The ability to share resources for the benefit of all members of a group may have driven ancient organisms to evolve from a unicellular to a multicellular state.

Islands of non-methylated DNA are shown to perform a similar epigenetic role in many different vertebrate species.

A bacterial protein can be programmed with short RNA molecules to stimulate genome editing at specific sites in human cells.