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kinetochore is associted with...

kinetochore is associted with

A

Primary constriction

B

Secondary constriction

C

Satellite

D

More than one option is correct

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Kinetochore**: The kinetochore is a protein structure that forms on the centromere of a chromosome during cell division. It is crucial for the movement of chromosomes. 2. **Location of Kinetochore**: The kinetochore is located at the primary constriction of the chromosome, which is the centromere region. This is where the two sister chromatids are joined. 3. **Function of Kinetochore**: The primary function of the kinetochore is to serve as the attachment point for spindle fibers (microtubules) during mitosis and meiosis. These fibers pull the chromosomes apart to ensure that each daughter cell receives the correct number of chromosomes. 4. **Evaluating Options**: - **Primary Constriction**: Correct, as the kinetochore is indeed associated with the primary constriction (centromere). - **Secondary Constriction**: Incorrect, as the kinetochore does not associate with this region. - **Satellite**: Incorrect, as satellites are not associated with the kinetochore. - **More than one option is correct**: Incorrect, as only the primary constriction is correct. 5. **Conclusion**: The correct answer is that the kinetochore is associated with the primary constriction of the chromosome. **Final Answer**: Kinetochore is associated with the primary constriction. ---
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