In the honeybee (Apis mellifera), sex is determined by a haplo-diploid system: females (queens and workers) are diploid (2n2n2n) and develop from fertilised eggs, while males (drones) are haploid (nnn) and develop from unfertilised eggs.
If a somatic muscle cell of a worker bee contains 32 chromosomes, how many chromosomes are present in a sperm cell produced by a drone bee?
888
161616
323232
646464