Researchers of the University of Illinois in Urbana, USA, led by Gene Robinson, say nepotism among bees is governed by a brain chemical that helps them distinguish intruders from fellow hive members.
Appearances are deceptive, as the case of honey bees demonstrates. Though physiologically alike, queens and workers among bees can be genetically classified as different species
Like ants and termites, bees too are known to follow a fixed path whenever they are on the move. Entomologists S A Cameron and J B Whitfield studied the Bombus tranversalis species of humble bee