The extinct stilt-legged equids of North America are not related to Asiatic asses or horses, but instead represent a distinct lineage outside of living equid diversity that became extinct in the terminal Pleistocene.
aDNA revealed a model of domestication where an ancient guanaco population no longer exists, the loss of the ancient vicuña genetic variation in the modern populations, and frequently interbreeding practices.
RNA profiles from lungs of mice exposed to intermittent hypoxia shared similarity with gene expression changes in human lung from patients with pulmonary diseases, including pulmonary hypertension, COPD, and asthma.
Artificial selection for increased tibia length in mice made their skulls longer, narrower, and flatter, suggesting that even distant skeletal regions can evolve as correlated responses to selection acting locally.
Mice exposed to complex early adversity show similar diffusion MRI changes to those reported in humans and sex-specific changes in connectivity that differentially affect contextual deficits in males and females.