NEET2014BotanyCell Cycle and Cell DivisionActual
During which phase(s) of cell cycle, amount of DNA in a cell remains at 4 C level if the initial amount is denoted as 2C?
Options
- AG 0 and G 1
- BG 1 and S
- COnly G 2
- DG 2 and M
Correct answer
D. G 2 and M
Step-by-step solution
Explanation for the correct option: 1. At certain points during M-phase, both (4 C ) and (2 C ) DNA is present. 2. The S phase occurs when the amount of DNA in the cell doubles. 3. As a result, the amount of DNA present in the (G 2 ) phase is 4 C. 4. The cell's contents have been doubled, preparing it for further mitotic division. 5. Interphase is made up of the G1 phase (cell growth). S phase (DNA synthesis), and G2 phase (cell growth). 6. At the completion of the interphase, the mitotic phase begins, which consis