Principle of Inheritance and VariationMedium

Question

Which of the following statements are true with reference to the sex-determination in honeybees?

A. An offspring formed from the union of a sperm and an egg, develops as a female (queen or worker).

B. An unfertilized egg develops as a male by parthenogenesis.

C. A male has half the number of chromosomes than that of a female.

D. Males produce sperms by meiosis.

E. Honeybees have a haplodiploid sex-determination system.

Choose the correct answer from the options given below:

Options

A.A, B, C and E only
B.B, C, D and E only
C.A, B, C and D only
D.A, B, D and E only

Solution

Sol. [Key Concept: Sex determination in honeybees — haplodiploidy]

In case of honeybees, males have half the number of chromosomes than that of females. The females are diploid, having 32 chromosomes and males are haploid, i.e., having 16 chromosomes. This is called as haplodiploid sex-determination system and has special characteristic features, such as, the males produce sperms by mitosis.

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