Which of the following is not a characteristic feature of genetic material ?
(a) It should be chemically and structurally less stable
(b) It should be able to produce its replica
(c) It should be more reactive
(d) It does not follow Mendelian inheritance
(e) It provides scope for slow changes i.e. mutation

Options

A. only a, b, c and d
B. b, c, a, d, e
C. c, d, e
D. a, c, d

Answer

To solve the question "Which of the following is not a characteristic feature of genetic material?", we need to analyze each of the given options based on our understanding of genetic material.

### Step-by-Step Solution:

1. **Understanding Genetic Material**: Genetic material, which is primarily DNA (deoxyribonucleic acid) or RNA (ribonucleic acid), is responsible for storing and transmitting genetic information. It must have certain characteristics to function properly.

2. **Evaluating Option (a)**: "It should be chemically and structurally less stable."
- **Analysis**: This statement is incorrect. Genetic material should be chemically and structurally stable to maintain its integrity and minimize mutations. Therefore, this is a characteristic that does not apply to genetic material.

3. **Evaluating Option (b)**: "It should be able to produce its replica."
- **Analysis**: This statement is correct. Genetic material must be able to replicate itself during cell division to ensure that genetic information is passed on to the next generation.

4. **Evaluating Option (c)**: "It should be more reactive."
- **Analysis**: This statement is incorrect. Genetic material should be less reactive to avoid unwanted reactions that could lead to mutations or damage. Thus, this is also a characteristic that does not apply to genetic material.

5. **Evaluating Option (d)**: "It does not follow Mendelian inheritance."
- **Analysis**: This statement is incorrect. Genetic material does follow Mendelian inheritance principles, which describe how traits are passed from parents to offspring through discrete units (genes). Therefore, this is another characteristic that does not apply to genetic material.

6. **Evaluating Option (e)**: "It provides scope for slow changes i.e. mutation."
- **Analysis**: This statement is correct. Genetic material allows for mutations, which are essential for evolution and adaptation, but these changes typically occur slowly over time.

### Conclusion:
Based on the analysis, the options that are **not characteristic features of genetic material** are:
- (a) It should be chemically and structurally less stable.
- (c) It should be more reactive.
- (d) It does not follow Mendelian inheritance.

Thus, the correct answer is **(a)**, **(c)**, and **(d)**.