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Class 12 Tuition > Learn Class XI-XII Tuition (PUC) > Why the negative end of the spindle fibre is directed...
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Why the negative end of the spindle fibre is directed towards the pole during Metaphase stage of Cell Division?

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There is a pulling force of chromosomes towards the opposite end of the cell for the transition of metaphase to anaphase..
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Microtubules originate from centrosomes that serve as the the negative end . In interphase cells, the single centrosome is close to the nucleus and microtubules originate from the center towards the cell periphery. In S-phase, like the DNA, the centrosome also duplicates itself. During mitosis, the duplicated...
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Microtubules originate from centrosomes that serve as the the negative end . In interphase cells, the single centrosome is close to the nucleus and microtubules originate from the center towards the cell periphery. In S-phase, like the DNA, the centrosome also duplicates itself. During mitosis, the duplicated centrosomes move to the cell ends while still serving as the negative end and again from there microtubules originate, this time towards the cell center to capture and position the chromosomes. read less
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post-graduate in pediatrics

To have identical chromatin material in daughter cells
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The pole closest to the chromosome exerts a pushing force that restores the chromosome to the equator, these opposing forces are balanced when a chromosome is at the equator of the spindle, so the chromosome remains stationary there.
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The pole closest to the chromosome exerts a pushing force that restores the chromosome to the equator, these opposing forces are balanced when a chromosome is at the equator of the spindle, so the chromosome remains stationary there.
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On halving the capacitance at constant voltage, we lost half the original charge Q . This ½ Q goes into the battery against the voltage V , so the battery is recharged with restored energy ½ QV . Only half that energy pumped into the battery comes from energy stores in the capacitor’s...
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On halving the capacitance at constant voltage, we lost half the original charge Q . This ½ Q goes into the battery against the voltage V , so the battery is recharged with restored energy ½ QV . Only half that energy pumped into the battery comes from energy stores in the capacitor’s electric field: the rest comes from work done dragging the plates apart read less
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