Which of the following events does not occur during one of the three phases of interphase?

• A. Cell growth
• B. DNA replication
• C. Chromosome condensation
• D. Protein synthesis

Answer: (C)

Verified step by step guidance

1. Understand the phases of interphase: Interphase is divided into three phases - G1 (Gap 1), S (Synthesis), and G2 (Gap 2). Each phase has specific events that occur within the cell cycle.
2. Identify the events in each phase: During the G1 phase, the cell grows and synthesizes proteins necessary for DNA replication. In the S phase, DNA replication occurs, resulting in the duplication of chromosomes. The G2 phase involves further cell growth and preparation for mitosis, including the synthesis of proteins required for cell division.
3. Recognize the role of chromosome condensation: Chromosome condensation is a process that occurs during prophase of mitosis, not during interphase. During interphase, the DNA is in a less condensed form known as chromatin, allowing for transcription and replication.
4. Differentiate between interphase and mitosis: Interphase is primarily focused on cell growth, DNA replication, and preparation for cell division, while mitosis involves the actual division of the cell's nucleus and the condensation of chromosomes.
5. Conclude which event does not occur during interphase: Based on the understanding of interphase and mitosis, chromosome condensation does not occur during interphase. It is a key event in the early stages of mitosis.