What is haplodiploidy?

Explanation

(i) It is a system of sex determination in which sex of the offspring is determined by the number of sets of chromosomes it receives.
(ii) Eg. Honey bees in which fertilized eggs develop into females (Queen or worker bees) and unfertilized eggs develop into males (drones) by parthenogenesis.
(iii) This means males have half the number of chromosomes (haploid - n) and females have double the number of chromosomes (diploid - 2n). Hence the method is called haplodiploidy.