Cromosome ends are called

Options

A. Satellites
B. Telomers
C. Centromeres
D. Kinetochores

Answer

**Step-by-Step Solution:**

1. **Understanding Chromosomes**:
- Chromosomes are structures within cells that contain DNA and proteins. They are essential for the storage and transmission of genetic information.

2. **Identifying Parts of a Chromosome**:
- A chromosome consists of two arms: the short arm (designated as 'p') and the long arm (designated as 'q').
- The central part of the chromosome is called the centromere, which plays a crucial role during cell division.

3. **Understanding Kinetochores**:
- Kinetochores are protein structures that form at the centromere. They are essential for the attachment of spindle fibers during cell division, ensuring that chromosomes are correctly segregated into daughter cells.

4. **Identifying the Ends of Chromosomes**:
- The ends of chromosomes are referred to as telomeres. These are specialized structures that protect the ends of chromosomes from deterioration or fusion with neighboring chromosomes.

5. **Characteristics of Telomeres**:
- Telomeres consist of repetitive nucleotide sequences, which help maintain the integrity of the chromosome during cell division. They prevent the loss of important genetic information.

6. **Conclusion**:
- Therefore, the ends of chromosomes are called telomeres.

**Final Answer**: Chromosome ends are called **telomeres**.

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