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

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 10. Cell cycle and cell division1 Mark
MCQ
The $S-$phase of cell cycle is characterized by
  • A
    Duplication of chromosome no.
  • B
    Shortening of chromosome
  • ✓
    Duplication of $DNA$
  • D
    Duplication of cell organelles
✓

Answer

Correct option: C.
Duplication of $DNA$
c
Synthesis phase or $S-$phase is the phase in cell cycle during which $DNA$ is replicated. The synthesis of histone proteins and $RNA$ also takes place in this phase in this phase and each chromosome has two chromatids.

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