NEET 2023 Phase 2 · BiologyPloidyPrevious Year Question
During which stages of mitosis and meiosis, respectively does the centromere of each chromosome split?
Answer: (B) Anaphase, Anaphase II. Answer: Anaphase, Anaphase II Solution: In mitosis the centromere of each chromosome splits at anaphase, separating sister chromatids.
- A.Telophase, Anaphase I
- B.Anaphase, Anaphase II✓
- C.Metaphase, Metaphase II
- D.Prophase, Telophase I
Correct Answer
(B) Anaphase, Anaphase II
Solution & Explanation
Answer: Anaphase, Anaphase II Solution: In mitosis the centromere of each chromosome splits at anaphase, separating sister chromatids. In meiosis the centromere splits only at anaphase II (anaphase I separates homologous chromosomes while sister chromatids remain joined at their centromeres). Hence the splitting occurs at anaphase and anaphase II respectively. NCERT Reference: Ch 10, p.127, lines 22-23 — "Anaphase II: It begins with the simultaneous splitting of the centromere of each chromosome"
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