A molecule is the smallest part of a substance that has the physical and chemical properties of that substance. In some respects, a molecule is similar to an atom. A molecule, however, is composed of more than one atom.

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#Id: 8891

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Kinetochores assemble on regions of chromosomal DNA marked by a centromere-specific H3 histone variant called CENP-A.

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#Id: 8892

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Amphitelic attachment, 

sister kinetochores attach to microtubules emanating from opposite spindle poles, they are stably attached

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#Id: 8893

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Merotelic attachment 

A kinetochore can attach to microtubules emanating from both poles at the same time

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Syntelic attachment 

Both kinetochores of a sister chromatid pair can attach to microtubules from the same pole

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#Id: 8895

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Monotelic attachment 

only one kinetochore can attach to microtubules

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#Id: 8897

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Sensing mechanism used by cells to detect incorrect chromosome attachments is based on tension.