NEET2020BotanyCell Cycle and Cell DivisionActual
Identify the correct statement with regard to G 1 phase (Gap 1) of interphase.
Options
- AReorganisation of all cell components takes place.
- BCell is metabolically active, grows but does not replicate its DNA.
- CNuclear Division takes place.
- DDNA synthesis or replication takes place.
Correct answer
B. Cell is metabolically active, grows but does not replicate its DNA.
Step-by-step solution
G 1 Phase: G 1 phase is the interval between mitosis and initiation of DNA replication. In this phase, the cell does not synthesize or, replicate DNA but remains metabolically active. The cell grows in size continuously and synthesizes nucleotides, ATP, proteins, amino acids, RNAs etc. (required during S phase). The length of the G 1 phase varies from one cell to another. If a cell divides frequently, then it has a shorter G 1 phase and if a cell does not divide frequently, then it has a longer G 1 phase. Replicati