Which phase immediately follows G1 in the cell cycle?

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Study for the Galen Anatomy and Physiology (AandP) 1 Theory Exam 2. Gain confidence with flashcards, pinpoint areas needing focus, and strengthen understanding through detailed explanations. Excel in your exam with comprehensive preparation!

Multiple Choice

Which phase immediately follows G1 in the cell cycle?

Explanation:
After growth and normal function in G1, the cell must copy its genetic material before division. This is the S phase, the stage dedicated to DNA synthesis. Copying the genome here ensures that, once the cell divides, each daughter cell inherits a complete set of chromosomes. After S, the cycle moves into G2, where the cell checks for and repairs DNA and builds the machinery for mitosis, followed by M phase, which includes mitosis and cytokinesis. So the phase immediately after G1 is the S phase because DNA replication must happen before the cell can proceed to division.

After growth and normal function in G1, the cell must copy its genetic material before division. This is the S phase, the stage dedicated to DNA synthesis. Copying the genome here ensures that, once the cell divides, each daughter cell inherits a complete set of chromosomes. After S, the cycle moves into G2, where the cell checks for and repairs DNA and builds the machinery for mitosis, followed by M phase, which includes mitosis and cytokinesis. So the phase immediately after G1 is the S phase because DNA replication must happen before the cell can proceed to division.

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