Question

fill in the blank question
the structure at the center of the chromosome where the sister chromatids are attached is called the
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Explanation:

In cell biology (a subfield of Biology, which is part of Natural Science), the centromere is the region of a chromosome where the two sister chromatids are joined together. It plays a crucial role in cell division, especially in the attachment of spindle fibers during mitosis and meiosis.

Answer:

centromere