Queen Bee, Worker Bee: Two Lives Shaped by the Same Genes

A queen bee and a worker bee begin with almost the same genetic foundation, yet they develop into females with entirely different bodies, duties and lifespans. A major part of the explanation lies in royal jelly.

The thick, milky secretion is produced by young worker bees. They feed it to larvae and to the adult queen, and future queens receive especially large quantities throughout their development. Without this distinctive feeding pattern, a queen would not develop.

Both bees are females of the honeybee species Apis mellifera, and both emerge from fertilized eggs. The queen grows larger, develops ovaries and is generally the colony's only reproductively active female. Her principal role is to lay eggs.

Worker bees perform nearly every other task in the hive. They clean cells, feed the brood, build honeycomb, receive and process nectar, guard the hive, and later collect nectar, pollen and water. Their lives are usually much shorter than a queen's, particularly in summer, when workers commonly live only a few weeks.

The difference does not come from a separate set of genes belonging only to queens. During the first days, all young larvae receive glandular secretions from worker bees. Later, the diets diverge. Queen larvae continue receiving abundant royal jelly and grow in larger, specially shaped queen cells, while future workers receive a different nutrient mixture after the first days. From a similar genetic starting point, the colony thus produces two females with sharply different characteristics and roles.