PHILADELPHIA, Pennsylvania, June 14 (TNSjou) -- The University of Pennsylvania School of Arts and Sciences issued the following news: * * * What can tiny molecules in ants and naked mole-rats tell us about societal roles? PIK Professor Shelley Berger and colleagues explored the genetic basis of labor distribution in communal-dwelling species and discovered that pathways dating back hundreds of millions of years are conserved across animal kingdoms. Their findings offer fundamental insights in  more