Page "Honey bee" Paragraph 12

Drones are produced from unfertilized eggs and therefore represent only the DNA of the queen that laid the eggs, i. e. have only a mother.

Workers and queens result from fertilized eggs and therefore have both a mother and a father.

A modified form of parthenogenesis controls sex differentiation.

The sex allele is polymorphic and so long as two different variants are present, a female bee results.

If both sex alleles are identical, diploid drones are produced.

Honeybees detect and destroy diploid drones after the eggs hatch.