18 public questions tagged with this topic.
Chromosome segregation occurs during mitosis, whereas interphase is mainly for growth, DNA replication, and preparation for division. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept, Topic: Plant structure, physiology and applications.
Interphase consists of G1, S, and G2 phases, during which the ll grows, replicates DNA, and prepares for mitosis. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Morphology and Anatomy of Flowering Plants, Topic: Plant structure and tissue systems.
G2 phase operates as final growth and quality control interval preparing cells materially and regulatory for mitosis. After completion of DNA replication in S phase, cells enter G2 where synthesis continues: transcription of genes encoding tubulin isotypes, gamma-tubulin ring complex proteins gamma-TuRC, pericentrin, Cep192, and microtubule-associated proteins rises to stockpile building blocks for spindle assembly. Centrosomes duplicated in S phase mature by acquisition of pericentriolar material becoming competent microtubule organizing centers. Organelles including Golgi apparatus and mitoc
Ref: Alberts et al., Molecular Biology of the Cell, 7th ed., Chapter 17, G2 Phase Preparation for Mitosis.
G2 phase is second gap phase dedicated to growth, quality surveillance, and accumulation of components required for mitosis. After S phase completes DNA synthesis, cells continue protein synthesis, particularly tubulin alpha/beta heterodimers and gamma-tubulin ring complex proteins for spindle assembly, histone variants H2AZ for chromatin stability, and membrane lipid synthesis for organelle expansion. Centrosomes duplicated during S phase mature in G2 by recruitment of pericentriolar material including pericentrin, Cep192, and Cdk5Rap2, acquiring ability to nucleate large astral microtubule a
Ref: Alberts et al., Molecular Biology of the Cell, 7th ed., Chapter 17, G2 as Preparation for M Phase.
Chromosome segregation occurs during mitosis, whereas interphase is mainly for growth, DNA replication, and preparation for division.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
DNA replication occurs in the S phase, ensuring each daughter cell receives an identical set of genetic material.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
DNA replication occurs in the S phase, not in G2.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
The G2 phase is a checkpoint where the cell ensures that DNA replication was completed correctly before mitosis begins.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
G1 phase comes before the S phase, not after it.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
During the S phase, DNA is replicated, doubling the chromosome content of the cell but not the chromosome number.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
DNA replication does not occur in G1 phase; it happens in the S phase.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
Interphase is the longest phase of the cell cycle, not the shortest.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Cell Cycle - Phases G1 S G2 M and Regulation
