Principles of Inheritance and Variation

Genic balance theory,barr bodies,Haplodiploidy in honey bees

  • Honeybees fall into three caste systems (i) Drone (male) (ii) sterile worker (F) and (iii) Queen (F)
  • Drones are developed only through parthenogenesis (arrhenotoky) and hence they are always haploid in nature (n)
  • Worker and Queen are developed from sexual mating and reproduction and hence will be diploid. (2n)
  • Differentiation of sterile works and queen is on the basis of food they are fed during their growth

Watch this video for the topic from 19:06 to 23:38

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