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प्रश्न
The two sister chromatids of a chromosome are attached to each other at ______.
रिकाम्या जागा भरा
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उत्तर
The two sister chromatids of a chromosome are attached to each other at centromere.
Explanation:
The centromere is a specialised, constricted region of the chromosome that physically links the two sister chromatids. Protein complexes called cohesins physically glue the chromatids together along this region after DNA replication. During cell division, a protein structure called the kinetochore forms on the centromere, allowing spindle fibres to attach and eventually pull the sister chromatids apart.
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