Which one among the following was the first genetic material ?

Options

A. DNA
B. RNA
C. Protein
D. Nuclein

Explanation

To answer the question "Which one among the following was the first genetic material?" we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the first genetic material among the given options: DNA, RNA, protein, and nuclein.

2. **Analyze the Options**:
- **DNA**: Known as the genetic material in most organisms today, but it is believed to have evolved later.
- **RNA**: Research suggests that RNA was the first genetic material in early life forms.
- **Protein**: While proteins are essential for life, they do not serve as genetic material.
- **Nuclein**: An older term that refers to nucleic acids, but it is not specific to RNA or DNA.

3. **Evaluate the Evidence**: Scientific evidence indicates that essential life processes, such as metabolism and translation, evolved around RNA. RNA is capable of both storing genetic information and acting as a catalyst (ribozymes).

4. **Conclusion**: Given that RNA is believed to have been the first genetic material from which DNA evolved through chemical modifications, we can conclude that the correct answer is RNA.

5. **Final Answer**: Therefore, the first genetic material among the options provided is **RNA**.