Two new unicellular organisms reveal that coordinated contractions of groups of cells using actomyosin predated animal multicellularity during evolution.

Similar patterns of genomic divergence have been observed in the evolution of plant species separated by oceans.

Regulatory evolution allows paralogs to escape from strucural pleiotropy.

Cooperativity between two transcription regulators occurs through protein-protein interactions with a general transcription factor complex and potentiates the parallel evolution of their DNA binding sites.

A gene duplication event has permitted the functional specialization of a homeodomain transcription factor through changes in exon-intron organization and these changes have supported the evolution of a major, phylum-level morphological novelty.

Life-threatening S. aureus infections emerge from commensal nose bacteria in association with repeatable adaptive evolution.

A gain-of-function in a new chemical defense resulted in no trade-offs and and independent evolution between novel and ancestral defenses, suggesting low redundancy among different defensive chemicals.

In an in vitro RNA replication system, an RNA spontaneously diversifies and continuously evolves through coevolution with parasitic entities.

A deep mutational coupling study demonstrates the ability of sequence coevolution methods to reveal the pattern of amino acid interactions underlying protein function.

Phenotypic evolution can originate from variations in very precocious developmental events, starting even before fecundation, during the fabrication of the egg in the mother's gonad.