puddingebola writes: A report in the journal Nature Neuroscience says scientists have observed epigenetic markers in bees that correspond to their roles in the society. From the article, "Honeybees are born into their place in society. Those fed royal jelly as larvae emerge as queens and do little but lay eggs. The rest become worker bees and divvy up the jobs that need doing around the hive. While some worker bees remain at home, others take flight in search of nectar, pollen and other hive essentials. The entire honeybee workforce are genetically identical sisters. But analysis of the worker bees' DNA revealed that foragers had one pattern of chemical tags on their genes, while those that stayed home had another. When bees swapped one job for the other, their genetic tags changed accordingly."