GROWTH DEVELOPMENT CHILD
GROWTH AND DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glue
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Centromere
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Spindle Fibers
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DNA
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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: -Cohesin is a ring-shaped protein complex Sister chromatids are physically held together by cohesin, which is a protein complex consisting of four core subunits (Fig. 1).
Detailed explanation-3: -Sister Chromatids Are Joined Together at Centromeres In addition to their kinetochore-related function, centromeres perform another essential role in mitosis by serving as the sites of sister chromatid cohesion.
Detailed explanation-4: -After DNA is replicated each chromosome consists of paired sister chromatids held together by cohesin.
Detailed explanation-5: -Answer and Explanation: The correct answer: Chromatids that are attached at the centromere are called d) sister chromatids.