All of the following are true regarding systematics except that:

Options

A. it is the study of the diversity of organisms at all levels of organisation
B. it is the specific study of identification, naming, and classification of organisms
C. it relies on data from the fossil record, homology, and molecular data
D. it utilises protein, DNA and RNA comparisons to determine relatedness of individuals

Explanation

To solve the question regarding systematics, we need to analyze each option provided and determine which statement is not true about systematics.

### Step-by-Step Solution:

1. **Understanding Systematics**:
- Systematics is the scientific study of the diversity of organisms and their relationships, including their evolutionary history. It encompasses various aspects such as classification, identification, and nomenclature.

2. **Analyzing Each Option**:
- **Option 1**: "It is the study of the diversity of organisms at all levels of organization."
- This statement is true. Systematics does study the diversity of organisms.

- **Option 2**: "It is the specific study of identification naming and classification of organisms."
- This statement is misleading. While systematics does involve classification, the specific study of identification, naming, and classification is more accurately described by taxonomy. Therefore, this option is not true regarding systematics.

- **Option 3**: "It relies on data from the fossil record homology and molecular data."
- This statement is true. Systematics uses various data sources, including fossils and molecular data, to understand relationships among organisms.

- **Option 4**: "It utilizes protein, DNA and RNA comparisons to determine relatedness of individuals."
- This statement is also true. Molecular comparisons are a significant part of modern systematics.

3. **Conclusion**:
- The only statement that is not true regarding systematics is **Option 2**, which incorrectly describes systematics as the specific study of identification, naming, and classification of organisms. This is the domain of taxonomy.

### Final Answer:
The correct answer is **Option 2**: "It is the specific study of identification naming and classification of organisms."

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