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In the region of kinetochores, what atta...

In the region of kinetochores, what attaches to the chromosomes?

A

Centrosome

B

Spindle fibres

C

Nucleus

D

Chromatids

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### Step-by-Step Solution: 1. **Understanding Kinetochores**: Kinetochores are protein complexes that form at the centromere of a chromosome during cell division. They play a crucial role in the movement of chromosomes. 2. **Identifying the Role of Centromeres**: The centromere is a specific region of the chromosome where the kinetochores are located. It is essential for the proper segregation of chromosomes during cell division. 3. **Spindle Fibers Attachment**: During cell division, spindle fibers, which are structures made of microtubules, attach to the kinetochores. This attachment is critical for the movement of chromosomes toward opposite poles of the cell. 4. **Conclusion**: Therefore, in the region of kinetochores, it is the centromere that attaches to the chromosomes, allowing the spindle fibers to connect and facilitate chromosome movement during cell division. ### Final Answer: In the region of kinetochores, the **centromere** attaches to the chromosomes. ---
### Step-by-Step Solution: 1. **Understanding Kinetochores**: Kinetochores are protein complexes that form at the centromere of a chromosome during cell division. They play a crucial role in the movement of chromosomes. 2. **Identifying the Role of Centromeres**: The centromere is a specific region of the chromosome where the kinetochores are located. It is essential for the proper segregation of chromosomes during cell division. 3. **Spindle Fibers Attachment**: During cell division, spindle fibers, which are structures made of microtubules, attach to the kinetochores. This attachment is critical for the movement of chromosomes toward opposite poles of the cell. ...
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