Haplodiploidy Type of Sex Determination MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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12 Questions around this concept.
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In the following questions, a statement of assertion (A) is followed by a statement of reason (R)
(1) If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark A
(2) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark B
(3) If the Assertion is a true statement but the Reason is false, then mark C
(4) If both Assertion and Reason are false statements, then mark D
Assertion: Haploid and diploid processes regulate sex determination in a wide variety of species.
Reason: A single sex chromosome is required for the haploid process, whereas two sex chromosomes are required for the diploid mechanism.
Which of the following is an advantage of haplodiploidy?
Haploid-Diploid mechanism of sex determination involves:
Concepts Covered - 1
Haploid-diploid mechanism of sex determination
- Hymenopterous insects, such as bees, wasps, and ants, show a unique phenomenon in which an unfertilized egg develops into a male and a fertilized egg develops into a female.
- Therefore, the female is diploid (2N), and the male is haploid (N).
- Males are haploid as they develop parthenogenetically from unfertilized eggs, through a process called arrhenotoky.
- Therefore, sperm are not produced through meiosis.
- In honeybee, the quality of food determines whether a diploid larva will become a fertile queen or a sterile worker female.
- A larva fed on royal jelly, a secretion from the mouth of nursing workers, grows into a queen, whereas a larva fed on pollen and nectar grows into a worker bee.
- Thus, the environment determines fertility or sterility of the bee but it does not alter the genetically determined sex.
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