Different kinds of molecular changes at one genetic locus control different feather pigmentation patterns, and the darkest patterns resulted from hybridization with another species.

Cuticulosomes are organelles found in the hair cells of birds that are composed of ferritin nanoparticles, form rapidly after hatching by the fusion of vesicular structures, and may play an indirect role in magnetic sensation.

A continuum of genome relationships is discovered through comparative genomics of 627 sequenced mycobacteriophages isolated and characterized in an integrated research/education initiative.

Analyzing the genomes of rock pigeons demonstrates that genetic variation comes in many forms and can have unexpected origins.

The experience-dependent representation of time interval in the seconds-to-minutes range occurs as early as at the thalamic level in the brain.

A new specimen of Heterodontosaurus elucidates how ornithischian dinosaurs evolved a body plan substantially different from that of other dinosaurs and what these differences meant for their breathing.

Shigella flexneri, globally the most frequent cause of bacterial dysentery, is far more diverse, and has caused disease around the world for far longer than other Shigella species by persisting in local environments over extended timescales.

Demonstrating extreme diversity across crustaceans while contrasting with evolutionary stability in insects, mushroom body homologues further underpin the unity of Pancrustacea and shed new light on arthropod brain evolution.

A combined NMR and kinetic study demonstrates how the dynamic transition of a molecular chaperone between different oligomerization states can modulate its activity by altering the binding kinetics and energetics of non-native proteins.

Cooperation between evolutionarily disparate CRISPR-Cas modules allows bacteria to counter mutational escape by viruses.