The restriction enzyme Hind II was isolated from bacterium

Options

A. E. coli
B. Haemophilus indica
C. Haemophilus influenzae
D. Hibiscus indicus.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks where the restriction enzyme Hind II was isolated from. We have four options to consider.

2. **Nomenclature of Restriction Enzymes**:
- The naming of restriction enzymes follows a specific nomenclature:
- The first letter represents the genus of the bacterium.
- The next two letters represent the species.
- The following letter indicates the strain or type.
- A Roman numeral may follow to indicate the order of discovery.

3. **Analyzing Hind II**:
- The name "Hind II" can be broken down as follows:
- "H" stands for the genus **Haemophilus**.
- "i" and "n" represent the species **influenzae**.
- "d" indicates the strain.
- "II" signifies that it is the second enzyme discovered from this strain.

4. **Identifying the Correct Option**:
- Now, let's match this information with the options given:
- Option 1: E. coli (not correct, as it does not match the genus Haemophilus)
- Option 2: Haemophilus Indica (not correct, as it does not match the species influenzae)
- Option 3: Haemophilus Influenzae (correct, as it matches both the genus and species)
- Option 4: Hibiscus Indica (not correct, as it is not a bacterium)

5. **Conclusion**: The correct answer is **Haemophilus Influenzae**.

**Final Answer**: The restriction enzyme Hind II was isolated from **Haemophilus Influenzae**.

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