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Multiple Choice
During metaphase of mitosis, what happens to the chromatids?
A
Chromatids condense and become visible.
B
Chromatids are separated and pulled to opposite poles.
C
Chromatids are aligned at the cell's equatorial plane.
D
Chromatids are replicated.
Verified step by step guidance
1
Understand the context of mitosis: Mitosis is a process of cell division that results in two genetically identical daughter cells. It consists of several stages, including prophase, metaphase, anaphase, and telophase.
Focus on metaphase: During metaphase, the chromosomes are aligned at the cell's equatorial plane, also known as the metaphase plate. This alignment is crucial for the equal distribution of genetic material to the daughter cells.
Recognize the role of chromatids: Chromatids are the two identical halves of a duplicated chromosome. During metaphase, these chromatids are not yet separated; they are aligned at the equatorial plane.
Identify the mechanism: The spindle fibers, which are structures made of microtubules, attach to the centromeres of the chromatids. This ensures that each chromatid is properly aligned and ready for separation in the next phase.
Prepare for anaphase: After metaphase, the cell progresses to anaphase, where the chromatids are separated and pulled to opposite poles of the cell. This separation is facilitated by the shortening of the spindle fibers.