A Guide to Reproductive Diversity,” the second work by the author of “The Ecology of Center City, Philadelphia.” Frank, a ...

A duplicated gene evolved into a switch that determines sex in frogs, revealing how evolution can safely reshape critical ...

Termites did not evolve complex societies by adding new genetic features. Instead, scientists found that they became more ...

From the moment of conception, all cells and eventually all individuals, must pass critical thresholds. Researchers in the Department of Obstetrics and Gynecology, Maternal, Child and Adolescent ...