In eukaryotes, RNA polymerase III catalyses the sythesis of

Options

A. 5s rRNA, tRNA & SnRNA
B. mRNA, HnRNA & SnRNA
C. 28 S rRNA , 18 S rRNA & 5 S rRNA
D. All types of rRNA & tRNA

Answer

**Step-by-Step Solution:**

1. **Understand the Role of RNA Polymerase III**: In eukaryotic cells, there are three main types of RNA polymerases, each responsible for synthesizing different types of RNA. RNA polymerase III is specifically known for synthesizing certain small RNA molecules.

2. **Identify the Types of RNA Synthesized by RNA Polymerase III**: RNA polymerase III is responsible for the synthesis of:
- 5S rRNA
- tRNA (transfer RNA)
- snRNA (small nuclear RNA)

3. **Eliminate Incorrect Options**: The question may provide multiple choices. It's important to identify which options are incorrect based on the function of RNA polymerase III:
- mRNA (messenger RNA) is synthesized by RNA polymerase II, so it is incorrect.
- 28S rRNA and 18S rRNA are synthesized by RNA polymerase I, so these are also incorrect.
- The statement "all types of RNA" is too broad and misleading, as RNA polymerase III does not synthesize all types of RNA.

4. **Conclude with the Correct Answer**: Based on the information gathered, the correct answer to the question is that RNA polymerase III catalyzes the synthesis of 5S rRNA, tRNA, and snRNA.

**Final Answer**: In eukaryotes, RNA polymerase III catalyzes the synthesis of 5S rRNA, tRNA, and snRNA.

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