The specific sequence recognized by "molecular scissors" is called

Options

A. Isomer
B. Isobar
C. Misnomer
D. Palindrome

Answer

To answer the question "The specific sequence recognized by 'molecular scissors' is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Molecular Scissors":**
- Molecular scissors refer to restriction endonucleases, which are enzymes that cut DNA at specific locations.

2. **Identify the Function of Restriction Endonucleases:**
- These enzymes recognize specific sequences in the DNA and cleave the DNA at these sites.

3. **Define the Specific Sequence Recognized:**
- The specific sequence that restriction endonucleases recognize is known as the "recognition site."

4. **Characterize the Recognition Site:**
- Recognition sites are typically palindromic sequences. This means that the sequence reads the same forward and backward on complementary strands of DNA.

5. **Provide an Example:**
- For instance, the restriction enzyme EcoRI recognizes the palindromic sequence GATTC. On the complementary strand, it would read CTAA, which pairs with GATTC, confirming that it is palindromic.

6. **Conclude with the Correct Answer:**
- Therefore, the specific sequence recognized by molecular scissors (restriction endonucleases) is called a "palindrome."

### Final Answer:
The specific sequence recognized by "molecular scissors" is called a **palindrome**.

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