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Multiple Choice
What is the primary function of the centromere during cell division?
A
To initiate DNA replication
B
To regulate the cell cycle checkpoints
C
To hold sister chromatids together until they are separated
D
To synthesize spindle fibers
Verified step by step guidance
1
Understand the role of the centromere: The centromere is a region on a chromosome that plays a crucial role during cell division, particularly in mitosis and meiosis.
Identify the structure of chromosomes: Chromosomes consist of two sister chromatids, which are identical copies of a chromosome connected by the centromere.
Recognize the function during cell division: The centromere holds the sister chromatids together, ensuring they remain attached until they are ready to be separated during anaphase.
Consider the process of anaphase: During anaphase, the centromere splits, allowing the spindle fibers to pull the sister chromatids apart to opposite poles of the cell.
Conclude the primary function: The centromere's main function is to ensure proper segregation of chromosomes by holding sister chromatids together until they are separated during cell division.