NEET · Biology —

Principles of Inheritance and Variation appeared 7 times across 1 year — 7.8% of Biology. This question is from Sex Determination in Honey Bee.

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Questions 7 7
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In which animal do haploid cells divide mitotically to produce gametes?

Solution & Explanation

Core Logic

The male honeybee is haploid and females are diploid. The gamete formation in female honey bee is by meiosis, whereas male honeybees form gametes by mitosis. Thus, a haploid cell undergoes mitosis to produce gametes in male honeybees.

Pattern Recognition

Haplodiploid sex-determination system: Males (drones) develop parthenogenetically and are haploid. Therefore, they must produce sperm via mitosis to maintain the haploid state.

Chapter Mix

Class 12 Biology: Principles of Inheritance and Variation

Reference Study Guides

Principles Of Inheritance And Variation

More Principles of Inheritance and Variation Previous-Year Questions — Page 2

Q154 neet_2026_03_may_morning Sex Determination
In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are
  • A. all males
  • B. all females
  • C. females and males, respectively
  • D. males and females, respectively

Solution

Core Logic

In grasshoppers, sex determination is of the XX-XO type. Males have only one X chromosome besides the autosomes (XO), whereas females have a pair of X chromosomes besides the autosomes (XX). Therefore, an individual with 23 chromosomes (one less sex chromosome) is a male grasshopper, and the one with 24 chromosomes is a female grasshopper.

Pattern Recognition

Insects like grasshoppers follow XO male heterogamety. Males always have one chromosome less than females.

Chapter Mix

Class 12 Biology: Principles of Inheritance and Variation

More Principles of Inheritance and Variation Questions — neet_2026_03_may_morning

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Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)