객관식
During which phase of mitosis does the spindle apparatus disassemble, leading to the breakdown of spindle fibers?
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3. Energy & Cell Processes
Phases of Mitosis
객관식
Replication of each chromosome and its centromere takes place during which phase of the cell cycle?
A
G2 phase
B
M phase
C
G1 phase
D
S phase
검증된 단계별 안내1
Understand the cell cycle phases: The cell cycle consists of several phases, including G1, S, G2, and M phases. Each phase has specific functions related to cell growth and division.
Identify the function of the S phase: The S phase, or synthesis phase, is where DNA replication occurs. During this phase, each chromosome is duplicated, resulting in two sister chromatids connected by a centromere.
Differentiate between the phases: G1 phase is primarily for cell growth and preparation for DNA replication. G2 phase involves further growth and preparation for mitosis. M phase is where mitosis and cytokinesis occur, leading to cell division.
Recognize the importance of centromere replication: During the S phase, not only is the DNA replicated, but the centromere is also duplicated to ensure proper chromosome segregation during cell division.
Conclude the correct phase for replication: Based on the functions of each phase, the replication of chromosomes and their centromeres occurs during the S phase of the cell cycle.
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