INTRODUCTION TO MICROSCOPY CELL BIOLOGY
DIFFERENTIATED CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The structure that holds the sister chromatids together in the chromosome is called the
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centromere
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centriole
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sister chromatid
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spindle
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Explanation:
Detailed explanation-1: -The two “sister” chromatids are joined at a constricted region of the chromosome called the centromere. During cell division, spindle fibers attach to the centromere and pull each of the sister chromatids to opposite sides of the cell.
Detailed explanation-2: -Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Detailed explanation-3: -Definition. The centromere appears as a constricted region of a chromosome and plays a key role in helping the cell divide up its DNA during division (mitosis and meiosis). Specifically, it is the region where the cell’s spindle fibers attach.
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