Meiosis I - Metaphase I
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Description:
The changes a cell undergoes during metaphase I are as follows −
Bivalents arrange themselves in two parallel equatorial or metaphase plate.
Centromeres of homologous chromosomes lie equidistant from equator.
Since there are two centromeres in each bivalent, the centromeres of all the bivalents produce a double metaphasic plate.
Each chromosome gets attached to the spindle pole of its side by means of a chromosome fibre or tractile fibril which arises in the region of the centromere.
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