• Chromosomes are moved to spindle equator and get aligned along metaphase plate through spindle fibres to both poles.
During metaphase, chromosomes align at the cell's equator (metaphase plate) through spindle fiber attachments at centromeres. This is a critical checkpoint where all chromosomes must be properly positioned before anaphase separation. Students often confuse metaphase alignment with actual chromosome separation—metaphase is positioning only, not separation. Remember: chromosomes line up but remain attached at centromeres until anaphase begins. NTA tests this to verify students distinguish between metaphase's alignment phase and anaphase's separation phase, ensuring understanding of orderly mitotic progression.
Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after: [NEET 2023 ]
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