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NEET 2022 · BiologyMeiosisPrevious Year Question

Which one of the following never occurs during mitotic cell division?

Answer: (C) Pairing of homologous chromosomes. Answer: Pairing of homologous chromosomes Solution: Pairing (synapsis) of homologous chromosomes is a meiotic event (zygotene of prophase I) and never occurs in mitosis, which is an equational division producing identical daughter cells.

  1. A.Spindle fibres attach to kinetochores of chromosomes
  2. B.Movement of centrioles towards opposite poles
  3. C.Pairing of homologous chromosomes✓
  4. D.Coiling and condensation of the chromatids

Correct Answer

(C) Pairing of homologous chromosomes

Solution & Explanation

Answer: Pairing of homologous chromosomes Solution: Pairing (synapsis) of homologous chromosomes is a meiotic event (zygotene of prophase I) and never occurs in mitosis, which is an equational division producing identical daughter cells. Spindle-fibre attachment to kinetochores, movement of centrioles/centrosomes to opposite poles, and condensation of chromatids all do occur normally during mitosis. NCERT Reference: Ch 10, p.126, lines 35-36 — "this process of association is called synapsis"

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