Step 1: Honeybee Reproduction.
In honeybees, unfertilized eggs develop into drones, which are male bees. This process is known as parthenogenesis, where the egg develops without fertilization. Drones are haploid, meaning they have only one set of chromosomes.
Step 2: Conclusion.
Thus, unfertilized eggs in honeybees develop into male drones.
Final Answer:
\[
\boxed{\text{Unfertilized eggs in honeybees develop into drones (males).}}
\]