Question

Choose the correct answers from the alternatives given :
A particular cell has half as much DNA as some of the other cells in a mitotically active tissue. The cell in question could be in

• A. metaphase
• B. prophase
• C. $G_1$
• D. $G_2$

Answer 1

The correct option is C $G_1$

• Mitotically active tissue is the tissue where the cell division is actively taking place such as the root tip of a plant or the developing embryo.
• The cell cycle has 2 phases the first being the interphase where the cell rests and grows before the M phase where the cell division takes place.
• In the S phase of the interphase the DNA is replicated and double the amount of DNA than the mother cell is formed so that the genetic material is equally divided between the daughter cells after the division.
• Therefore if a cell is in the mitotically active that means that there will be a constant synthesis phase after every cell division to provide the daughter cell with the equal amount of DNA as the mother cell.
• So if a cell in a mitotically active tissue has half the DNA compared to the other cells of the tissue then the cell will be in G1 phase which is present after the Mphase of the cell and before the S phase where the DNA will replicate.
• Therefore the answer option 'G1' is correct.