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 :
- 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
In honeybees, fertilised eggs develop into diploid females (queen or worker, 32 chromosomes), while unfertilised eggs develop parthenogenetically into haploid males (16 chromosomes). This system is called haplodiploidy.
Because males are already haploid, they produce sperms by mitosis, not meiosis. Hence statement D is incorrect; correct statements are A, B, C and E.
Practice more Biology
Concept-wise practice with instant solutions on Fundamenthol.
Start practicing →