NTA Abhyas NEET2020BotanyCell Cycle and Cell DivisionPractice
Which of the following correctly related with given diagram? (i) Sequence of cell cycle = G 1 − S – G 2 − M phase (ii) A cell exits G 1 phase to enter an inactive stage - Quiescent stage or G 0 (iii) G 1 phase is the interval between mitosis and initiation of DNA replication. (iv) In G 1 phase DNA synthesis occurs.
Options
- Ai and ii
- Bii, iii and iv
- COnly ii
- Di, ii and iii
Correct answer
D. i, ii and iii
Step-by-step solution
The cell cycle is divided into two basic phases: A. Inter phase B. M Phase (Mitosis phase). The M Phase starts with the nuclear division, corresponding to the separation of daughter chromosomes (karyokinesis) and usually ends with division of cytoplasm (cytokinesis). The inter phase, though called the resting phase, is the time during which the cell is preparing for division by undergoing both cell growth and DNA replication in an orderly manner.