Skates are cartilaginous fish that can flourish in benthic ecosystems thanks to their wing-like pectoral fins. This unique trait, however, remains unknown on a molecular level. Where did these ...

A study of catsharks reveals how alterations in the expression and function of certain genes in limb buds underlie the evolution of fish fins to limbs. The findings are reported by researchers from ...

The complete fossil of a four-limbed fish, which existed around 374 million years ago, has provided a key piece of the evolutionary puzzle of how fins evolved into hands. A team that included ...

Skates got their wing-like fins with the help of a genetic shuffle that folded different sections of their genomes into physical contact with each other. This created a new pattern of gene activity in ...