Identify the mismatched pair in context to eukaryotic transcription.

Options

A. Origin of life from outer space
B. RNA pol II - synthesis of precursor of mRNA
C. RNA pol III - synthesis of tRNA
D. RNA pol III - synthesis of snRNA

Answer

To solve the question of identifying the mismatched pair in the context of eukaryotic transcription, we can follow these steps:

### Step 1: Understand the Components of Eukaryotic Transcription
Eukaryotic transcription involves several key elements, including RNA polymerases that synthesize different types of RNA. The main types of RNA polymerases in eukaryotes are:
- RNA Polymerase I: synthesizes rRNA (ribosomal RNA)
- RNA Polymerase II: synthesizes mRNA (messenger RNA)
- RNA Polymerase III: synthesizes tRNA (transfer RNA) and other small RNAs like snRNA (small nuclear RNA)

### Step 2: Analyze Each Option
1. **Origin of life from outer space**: This statement suggests a theory about the origin of life that is not directly related to the process of transcription in eukaryotes. The widely accepted scientific explanation for the origin of life is based on experiments like those conducted by Miller and Urey, which do not involve outer space.

2. **RNA polymerase II synthesizes mRNA**: This statement is correct. RNA polymerase II is responsible for synthesizing mRNA in eukaryotic cells.

3. **RNA polymerase III synthesizes tRNA**: This statement is also correct. RNA polymerase III is responsible for synthesizing tRNA.

4. **RNA polymerase III synthesizes snRNA**: This statement is correct as well. RNA polymerase III synthesizes small nuclear RNA (snRNA).

### Step 3: Identify the Mismatched Pair
Based on the analysis, the first option, "Origin of life from outer space," is the mismatched pair in the context of eukaryotic transcription. It does not relate to the transcription process or the functions of RNA polymerases.

### Conclusion
The mismatched pair in the context of eukaryotic transcription is **"Origin of life from outer space."**

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