Note the relationship between the first two words and suggest a suitable word for the fourth place.
Molecular scissors : Restriction endonucleases :: Molecular stitchers : ________

Explanation

To solve the analogy, we need to analyze the relationship between the first two terms: "Molecular scissors" and "Restriction endonucleases."

1. **Understanding the First Pair**:
- "Molecular scissors" refers to enzymes that cut DNA at specific sites.
- "Restriction endonucleases" are a type of enzyme that acts as molecular scissors, cutting DNA at specific sequences.

2. **Identifying the Second Pair**:
- The second pair is "Molecular stitchers."
...