The correct answer is Y
The third stage of mitosis, known as metaphase, divides the duplicate genetic material present in a parent cell's nucleus into two identical daughter cells. In a process akin to a cellular "tug of war," the chromosomes of the cell align themselves in the centre of the cell during metaphase. Sister chromatids are groups of duplicated chromosomes that are still connected at a centromere in the middle.
Around the centromere, protein structures known as kinetochores developed before metaphase. From the cell's poles on either end, kinetochore microtubules—long protein filaments that are connected to the kinetochores—extended.
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