Nuclear DNA sends information for protein synthesis through

Options

A. tRNA
B. mRNA
C. rRNA
D. All the above

Answer

To answer the question "Nuclear DNA sends information for protein synthesis through," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Role of DNA**:
- Nuclear DNA contains the genetic instructions necessary for the development, functioning, growth, and reproduction of all known organisms and many viruses. It serves as the blueprint for protein synthesis.

2. **Identifying the Types of RNA**:
- There are three main types of RNA involved in protein synthesis:
- **mRNA (messenger RNA)**: Carries the genetic information from DNA to the ribosome, where proteins are synthesized.
- **tRNA (transfer RNA)**: Brings amino acids to the ribosome during protein synthesis and matches them to the coded mRNA message.
- **rRNA (ribosomal RNA)**: A component of ribosomes, which are the sites of protein synthesis, but does not carry genetic information.

3. **Focus on Information Transfer**:
- The question specifically asks about how nuclear DNA sends information. This process involves the transcription of DNA into mRNA, which then carries the information to the ribosomes.

4. **Conclusion**:
- Since mRNA is responsible for carrying the genetic information from the DNA to the ribosomes for protein synthesis, the correct answer is **mRNA**.

### Final Answer:
Nuclear DNA sends information for protein synthesis through **mRNA**.

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