NEET 2016 Phase 1 · BiologyMeiosisPrevious Year Question
Which of the following is not a characteristic feature during mitosis in somatic cells?
Answer: (D) Synapsis. Answer: Synapsis Solution: Synapsis is the pairing of homologous chromosomes and is a meiosis-specific event (zygotene of prophase I); it does not occur during mitosis of somatic cells.
- A.Spindle fibres
- B.Disappearance of nucleolus
- C.Chromosome movement
- D.Synapsis✓
Correct Answer
(D) Synapsis
Solution & Explanation
Answer: Synapsis Solution: Synapsis is the pairing of homologous chromosomes and is a meiosis-specific event (zygotene of prophase I); it does not occur during mitosis of somatic cells. Spindle fibres, disappearance of the nucleolus, and chromosome movement are all normal features of mitotic karyokinesis. Therefore synapsis is the feature that is NOT characteristic of mitosis. NCERT Reference: Ch 10, p.126, line 36 — "this process of association is called synapsis"
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