Use the data in the accompanying table to answer the question. The data in the table was obtained from a study of the length of time spent in each phase of the cell cycle by cells of three eukaryotic organisms designed Beta, Delta, and gamma. What is the best explanation for the state associated with Delta cells? **Cell Cycle Analysis of Eukaryotic Organisms**The data provided in the table represents the time spent in minutes by cells of three distinct eukaryotic organisms, identified as Beta, Delta, and Gamma, within various phases of the cell cycle. The phases include G1, S, G2, and M.| Cell Type | G1 | S | G2 | M ||-----------|----|----|----|----|| Beta | 18 | 24 | 12 | 16 || Delta | 100| 1 | 0 | 0 || Gamma | 18 | 48 | 14 | 20 |**Explanation of the Table:**- **Beta Cells:** These cells spend 18 minutes in the G1 phase, 24 minutes in the S phase, 12 minutes in the G2 phase, and 16 minutes in the M phase.- **Delta Cells:** These cells spend a notably prolonged 100 minutes in the G1 phase, with significantly reduced times in the subsequent phases—1 minute in the S phase, and no time in the G2 and M phases.- **Gamma Cells:** These cells allocate 18 minutes to the G1 phase, 48 minutes to the S phase, 14 minutes to the G2 phase, and 20 minutes to the M phase.**Question:**What is the best explanation for the data associated with Delta cells?- ○ Delta cells contain no DNA- ○ Delta cells are in the G0 phase- ○ Delta cells contain no RNA- ○ Delta cells divide in the G1 phaseConsider the above choices in assessing the behavior of Delta cells, particularly the extended time in the G1 phase and lack of progression through the G2 and M phases.

Introduction :- Cell cycle is series of events and phases that a cell passes through , so as to completely divide into two genetically identical daughter cells. Cell cycle is divided into two main phases :- Interphase and Mitotic phase. Interphase is the phase of cell growth ( during which all the essential Protiens , mRNA are synthesized and DNA replication occurs) . Interphase is the longest phase of cell cycle and it is divided into 3 sub-phases :- G1 , S ,G2 . Mitotic phase is also divided into sub-phases :- Prophase , metaphase, Anaphase and telophase. Answer :- Option b) is the correct option. According to the given data , delta cells are in the G0 phase of the cell cycle . Explanation for correct option :- Cell cycle proceeds through all the phases and then completed , when it gets the specific signal through ligand molecules and under the normal internal environment ( homeostatic) conditions , for example :- DNA damage in case of human can halt the cell cycle until it is repaired and unavailability of nutrients in saccharomyces species leads to halting of cell cycle in interphase . So , when unfavourable conditions are there , then the cell spent all of its time in growth phase or interphase and do not proceed to Mitotic phase . G0 is the quiescent phase , in which cell continue to grow but not dividing . And according to the given data , it is clear that the delta cell spending almost all of the time in G1 phase and it means that the delta cell are in the G0 phase of the cell cycle because cells in G1 phase , under the abnormal environment conditions , goes to G0 stage . Explanation for incorrect options :- option a) delta cells contain no DNA is incorrect because from the given data , it can not be said that the delta cell do not have DNA Option c) delta cells contain no RNA is incorrect because RNA are present in the cell. During G1 phase , growth of cells continue and RNA are also produced . Option d) delta cells divide in the G₁ phase is incorrect because division of the cells takes place only in mitotic phase of the cell cycle . Mitotic phase is the actual division phase of the cell cycle while the G1, S and G2 are the actual growth phase of the cell cycle.