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Multiple Choice
During which phase of mitosis do the chromosomes line up in the middle of the cell?
A
Telophase
B
Prophase
C
Metaphase
D
Anaphase
Verified step by step guidance
1
Understand the process of mitosis, which is the division of a single cell into two genetically identical daughter cells. Mitosis consists of several phases: prophase, metaphase, anaphase, and telophase.
In prophase, the chromatin condenses into visible chromosomes, and the mitotic spindle begins to form. The nuclear envelope starts to break down.
During metaphase, the chromosomes align at the metaphase plate, which is an imaginary line equidistant from the two spindle poles. This alignment ensures that each daughter cell will receive an identical set of chromosomes.
In anaphase, the sister chromatids are pulled apart by the spindle fibers and move toward opposite poles of the cell.
Finally, in telophase, the chromosomes arrive at the poles, and the nuclear envelope re-forms around each set of chromosomes, resulting in two separate nuclei within the cell.