This type of RNA carries the genetic code

Options

A. mRNA
B. t RNA
C. r RNA
D. s RNA

Answer

To solve the question "This type of RNA carries the genetic code," we will analyze the different types of RNA mentioned and determine which one is responsible for carrying the genetic information.

### Step-by-Step Solution:

1. **Identify the Types of RNA**: The question presents four types of RNA: mRNA (messenger RNA), tRNA (transfer RNA), rRNA (ribosomal RNA), and sRNA (small RNA).

2. **Understand the Role of Each RNA Type**:
- **mRNA (messenger RNA)**: This RNA is synthesized from DNA during the process of transcription. It carries the genetic information from the DNA to the ribosome, where proteins are synthesized.
- **tRNA (transfer RNA)**: This RNA does not carry the genetic code itself but instead reads the codons on the mRNA and brings the corresponding amino acids to the ribosome for protein synthesis.
- **rRNA (ribosomal RNA)**: This RNA forms the core of the ribosome's structure and plays a role in protein synthesis but does not carry genetic information.
- **sRNA (small RNA)**: This type of RNA is involved in regulating gene expression but does not carry the genetic code.

3. **Determine Which RNA Carries Genetic Code**: Given the roles of each type of RNA, it is clear that mRNA is the only type that carries the genetic code from DNA to the ribosome for protein synthesis.

4. **Conclusion**: Therefore, the answer to the question is that mRNA (messenger RNA) carries the genetic code.

### Final Answer:
The type of RNA that carries the genetic code is **mRNA (messenger RNA)**.

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