The design of RNA-guided nucleases with properties not limited by evolution can expand programmable genome-editing capabilities. However, generating diverse multidomain proteins with robust enzymatic ...

A Barred Owl family in photographs, video, and a night score built from their own calls.

In mixed stands of the annual Impatiens capensis and I. pallida, bumblebees visit I. pallida almost exclusively even when the nutritional reward of I. pallida is removed. This phenomenon contradicts c...

Johnny Randall is the director of conservation programs at the North Carolina Botanical Garden. He researches rare plant reintroduction and Venus flytrap genetics as they relate to conservation efforts.

Floral nectar spurs are hypothesized to have had a major role in the evolution of floral diversity and plant-pollinator coadaptation. We examined variation in the degree of nectar spur curvature in tw...

Feathers are complex, branched keratin structures that exhibit a diversity of pigmentation patterns. Feather pigments are transferred into developing feather keratinocytes from pigment cells that migrate into the tubular feather germ from the ...

Comprehensive genomic and population genetic analyses of a non-recombining chromosome in white-throated sparrows reveal the actions of purifying selection, positive selection, and balancing selection,...