The non-sticky chromosomal ends are known as-

Options

A. Chromatids
B. Centromere
C. Chromomere
D. Telomere

Explanation

**Step-by-Step Solution:**

1. **Understanding Chromosomal Structure**: Begin by recognizing that chromosomes are made up of chromatin, which consists of DNA and proteins. Each chromosome has distinct regions that play specific roles during cell division.

2. **Identifying Chromosomal Ends**: Chromosomes have two ends, and these ends can be categorized based on their properties. Some ends are sticky, which means they can interact with other chromosomal ends, while others are non-sticky.

3. **Evaluating the Options**:
- **Chromatids**: These are the two identical halves of a replicated chromosome, joined at the centromere. They are considered sticky because they are connected.
- **Centromere**: This is the constricted region of a chromosome that separates it into two arms (short arm P and long arm Q). The centromere is also sticky as it holds the chromatids together.
- **Chromomere**: These are bead-like structures along the chromosome that represent regions of condensed chromatin. They are also sticky.
- **Telomere**: This is the region at the ends of a chromosome that consists of repetitive nucleotide sequences. Telomeres do not have overhanging ends and serve to protect the chromosome from degradation and fusion with neighboring chromosomes.

4. **Conclusion**: Based on the evaluation of the options, the non-sticky chromosomal ends are known as **telomeres**. They do not interact with other chromosomal ends and serve a protective function.

**Final Answer**: The non-sticky chromosomal ends are known as **telomeres**.

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