Which of the following processes occur during the G1 stage of the cell cycle?

• A. Cell growth and preparation for DNA synthesis
• B. DNA replication
• C. Chromosome segregation
• D. Nuclear envelope breakdown

Answer: (A)

Verified step by step guidance

1. Understand the cell cycle: The cell cycle consists of several stages, including G1, S, G2, and M phases. Each phase has specific functions and processes.
2. Identify the G1 phase: The G1 phase is the first stage of interphase in the cell cycle. It occurs right after the cell has divided and is a period of cell growth.
3. Determine the processes in G1: During the G1 phase, the cell grows in size, produces RNA, synthesizes proteins, and prepares the necessary components for DNA synthesis in the upcoming S phase.
4. Differentiate from other phases: DNA replication occurs in the S phase, chromosome segregation occurs during mitosis (M phase), and nuclear envelope breakdown is part of the prophase in mitosis.
5. Conclude the correct process: Based on the functions of the G1 phase, the correct process occurring during this stage is cell growth and preparation for DNA synthesis.