Original: For example, their caste system is organised quite differently from ants, since the castes contain members of both sexes, whereas in Hymenoptera the castes are unisexual and the males are haploid.
Simplified: For example, their caste system is organised quite differently from ants, since the castes contain members of both sexes, whereas in hymenoptera the castes are unisexual and the males are haploid.