What stage of mitosis is characterized by alignment of the replicated chromosomes along a central axis of the cell?

Question

BlackTom AI · Accepted Answer

When studying mitosis, each stage has characteristic events that help identify it. 
Option 1: metaphase. This is the stage during which replicated chromosomes align along the metaphase plate, i.e., a central plane equidistant between the two poles. Microtubules attach to kinetochores, and chromosomes are held in alignment to prepare for separation. 
Option 2: anaphase. In this stage, sister chromatids separate and are pulled toward opposite spindle poles; the chromosomes move apart rather than align in the center. 
Option 3: prometaphase. Here, the nuclear envelope breaks down (if present in the organism), microtubules interact with kinetochores, and chromosomes begin moving toward the center, but full alignment along the centerplate has not yet completed. 
Option 4: telophase. The chromosomes arrive at the poles and de-condense, while the nuclear envelope re-forms around the separated sets of chromosomes, signaling the near end of mitosis rather than central alignment. 
Option 5: prophase. This initial phase features chromatin condensing into visible chromosomes and the formation of the mitotic spindle, with no organized alignment of chromosomes at the center yet. 
In summary, the key feature described—replicated chromosomes lining up along a central axis—most closely matches metaphase, while the other options describe movements or events from different stages of mitosis.

BIOL_2004_81774_202509 Genetics Final Exam- Requires Respondus LockDown Browser

What stage of mitosis is characterized by alignment of the replicated chromosomes along a central axis of the cell?

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