Question

chromosome get alligned at the center of cell in which stage

Answer 1

Prophase I of meiosis.
It is clearly visible in the diagram that homologous chromosome pair to form tetrad and exchange segments by forming chiasmata kinetochore and spindle fibres
De-polymerisation of spindle results in separation of chromatids towards opposite poles. So kinetochore attached to the spindle fibre attracts towards the poles due to disassembly of spindle fibre.
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Answer 2

Chromosomes get aligned at the center of the cell during the metaphase.

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