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Multiple Choice
During which phase of mitosis are the replicated chromosomes aligned in the middle of the cell?
A
Prophase
B
Telophase
C
Anaphase
D
Metaphase
Verified step by step guidance
1
Begin by understanding 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 chromosomes condense and become visible under a microscope. The nuclear envelope begins to break down, and the mitotic spindle starts to form.
During metaphase, the chromosomes are aligned at the metaphase plate, which is an imaginary line equidistant from the two spindle poles. This alignment ensures that each daughter cell will receive one copy of each chromosome.
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, completing the process of mitosis.