QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
The process of DNA replication occurs just before ______________.
A) cytokinesis
B) replication
C) mitosis
D) nucleosynthesis
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Answer
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Step 1:I'll solve this problem step by step, focusing on the biological context of DNA replication.
Step 2:: Understand the Context of DNA Replication
DNA replication is a critical process in the cell cycle where the entire genetic material is duplicated before cell division. This ensures that each new daughter cell receives a complete and identical set of genetic instructions.
Step 3:: Analyze the Cell Cycle Stages
Let's review the key stages of the cell cycle: - Interphase (includes G^1, S, and G^2 phases) - Mitosis (nuclear division) - Cytokinesis (cell division)
Step 4:: Identify When DNA Replication Occurs
DNA replication occurs during the S (Synthesis) phase of interphase, which happens just before mitosis begins. This ensures that each chromosome is duplicated and ready to be distributed to daughter cells.
Step 5:: Evaluate the Answer Choices
A) Cytokinesis - This is the final stage of cell division when the cytoplasm splits B) Replication - This is not a specific stage of the cell cycle C) Mitosis - This is the stage of nuclear division D) Nucleosynthesis - This is a general term for creating atomic nuclei, not specific to cell division
Step 6:: Select the Correct Answer
The correct answer is C) mitosis. DNA replication occurs just before mitosis begins, ensuring that each chromosome is fully duplicated and ready to be separated into daughter cells.
Final Answer
C) mitosis
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