Genetic analysis of modern skates showed that they also express proteins for genes known to assist with joint development, and that those joints require muscle movement to form properly. The ...

demonstrating through the power of DNA that natal river – where an individual fish is born – and season of spawning are both important for distinguishing subpopulations within each regional group.

Samples of living skin cells, gametes (sperm and egg), and reproductive tissues of mammals, birds, reptiles, amphibians, and ...

Short-lived fish such as herring and shad can recover ... Scientists have also described genetic diversity in Atlantic sturgeon; more genetic variety suggests they have more capacity to adapt ...