QQuestionBiology
QuestionBiology
"During which phase of the cell cycle are the chromosomes duplicated?
A. Mitosis
B. Cytokinesis
C. Meiosis
D. Interphase"
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Answer
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Step 1:I'll solve this biology problem step by step:
Step 2:: Understand the Cell Cycle Phases
The cell cycle consists of several distinct phases: - Interphase (preparation phase) - Mitosis (cell division phase) - Cytokinesis (cell separation phase) - Meiosis (specialized cell division for reproductive cells)
Step 3:: Identify Chromosome Duplication
Chromosome duplication occurs during the S (Synthesis) phase of Interphase. During this phase, the cell's DNA is replicated, creating identical copies of chromosomes.
Step 4:: Analyze the Answer Choices
A. Mitosis - This is the phase of cell division, not chromosome duplication B. Cytokinesis - This is the physical splitting of the cell C. Meiosis - This is a specialized cell division for reproductive cells D. Interphase - This includes the S phase where chromosome duplication occurs
Step 5:: Select the Correct Answer
The correct answer is D. Interphase, specifically the S phase within Interphase.
Final Answer
Interphase Key Insight: Chromosome duplication occurs during the S (Synthesis) phase of Interphase, which prepares the cell for division by replicating its genetic material.
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