NEET2005BotanyCell Cycle and Cell DivisionActual
At what stage of the cell cycle arc histone proteins synthesized in a eukaryotic cell?
Options
- Aduring G ₂ stage of prophase
- Bduring S-phase
- Cduring entire prophase
- Dduring telophase.
Correct answer
B. during S-phase
Step-by-step solution
Cell cycle is the series of events in which cells replicate and make two new cells. Cell cycle consists of stages- G₁, S, G₂ , and M (karyokinesis). G ₁ is the stage where the cell is preparing to divide. It then moves into the S phase where the cell copies all the DNA. S stands for synthesis phase of DNA. Histone proteins are also synthesised during the phase. After the DNA is copied and there's a complete extra set of all the genetic material, the cell moves into the G ₂ stage, where it organizes and condenses th