telomere repetitve DNA sequence control the funtion of eukaryote chromosomes because they :

Options

A. Act as replicons
B. Help chromosome pairing
C. Prevent chromosomes loss
D. Are RNA transcription initiator

Answer

### Step-by-Step Solution:

1. **Understanding Telomeres**: Telomeres are repetitive DNA sequences located at the ends of eukaryotic chromosomes. They serve as protective caps that prevent the chromosome from deteriorating or fusing with neighboring chromosomes.

2. **Function of Telomeres**: The primary function of telomeres is to protect the ends of chromosomes from being recognized as broken DNA. This is crucial because if the ends of chromosomes were to be recognized as breaks, it could lead to chromosome fusion or degradation.

3. **Role in DNA Replication**: During DNA replication, the enzymes involved can sometimes lead to the loss of DNA sequences at the ends of chromosomes. Telomeres, being repetitive sequences, ensure that even if some DNA is lost during replication, the essential coding sequences of the chromosome are preserved.

4. **Preventing Chromosome Loss**: Telomeres prevent chromosome loss by providing a buffer zone. This means that even if the telomere is shortened during replication, the important genetic information contained in the coding regions of the chromosome remains intact.

5. **Impact on Aging and Disease**: Over time, as cells divide, telomeres shorten. When they become too short, the cell can no longer divide properly, which is associated with aging and various diseases. This highlights the importance of telomeres in maintaining chromosome integrity.

6. **Conclusion**: Therefore, the repetitive DNA sequences of telomeres control the function of eukaryotic chromosomes primarily by preventing chromosome loss.

### Final Answer:
Telomere repetitive DNA sequences control the function of eukaryotic chromosomes because they **prevent chromosome loss**.

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