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Question
Explain the mode of sex determination in honeybees.
Solution
In hymenopteran insects such as honeybees, ants and wasps, a mechanism of sex determination called haplodiploidy mechanism of sex determination is common. In this system, the sex of the offspring is determined by the number of sets of chromosomes it receives. Fertilized eggs develop into females (Queen or Worker) and unfertilized eggs develop into males (drones) by parthenogenesis. It means that the males have half the number of chromosomes (haploid) and the females have double the number (diploid), hence the name haplodiploid for this system of sex determination.
This mode of sex determination facilitates the evolution of sociality in which only one diploid female becomes a queen and lays the eggs for the colony. All other females which are diploid having developed from fertilized eggs help to raise the queen’s eggs and so contribute to the queen’s reproductive success and indirectly to their own, a phenomenon known as Kin Selection. The queen constructs their social environment by releasing a hormone that suppresses fertility of the workers.
RELATED QUESTIONS
If X chromosome is inherited from mother and Y from father, the offspring will be male.
How is the sex of the child determined in human beings?
A new born child has an XY pair of chromosmes. Will it be a baby boy or a baby girl?
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(a) one
(b) two
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Choose the correct answer:
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Complete the following sentence with appropriate word:
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From the following which option correctly represents the normal genetic constitution of a ovum?
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