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STD 11 - 10. Cell cycle and cell division — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 10. Cell cycle and cell division1 Mark
MCQ
What would be the change in the chromosome number, during $S-$phase?
  • ✓
    No change
  • B
    The number of chromosome doubles
  • C
    The number of chromosome doubles only in case of diploid cell
  • D
    The number of chromosome doubles only in case of haploid cell
✓

Answer

Correct option: A.
No change
a
During S-phase, there is no increase in the chromosomes number. If the cell has diploid or $2 n$ number of chromosomes at $G_{1}$, even after S-phase the number of chromosomes remains the same, i.e., $2 n$

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