Multiple Choice
The phase of the ovarian cycle that extends from ovulation to the start of menstruation is the:
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11. Cell Division
Introduction to the Cell Cycle
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In which stage of the cell cycle do chromosomes replicate to form identical copies of themselves?
A
M phase
B
G1 phase
C
G2 phase
D
S phase
Verified step by step guidance1
Understand the cell cycle: The cell cycle consists of several stages, including G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). Each stage has a specific role in cell growth and division.
Focus on the S phase: The S phase, or Synthesis phase, is the part of the cell cycle where DNA replication occurs. During this phase, each chromosome is duplicated to form two identical sister chromatids.
Differentiate the other phases: G1 phase is primarily for cell growth and preparation for DNA replication. G2 phase is for further growth and preparation for mitosis. M phase is where the cell divides into two daughter cells.
Relate the question to the S phase: Since the question asks about the stage where chromosomes replicate to form identical copies, this directly corresponds to the S phase of the cell cycle.
Conclude that the correct answer is the S phase, as this is the only stage where DNA replication and chromosome duplication occur.
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