Would you choose an exonuclease, while producing a recombinant DNA molecule?

Explanation

**Step-by-Step Solution:**

1. **Understanding Exonucleases**: Exonucleases are enzymes that remove nucleotide units from the ends of a DNA molecule. They work by cleaving the phosphodiester bonds at the free ends of the DNA.

2. **Impact on DNA Fragments**: If exonucleases are used during the production of recombinant DNA, they would shorten the DNA fragments by removing nucleotides from the ends. This can lead to the complete degradation of the DNA fragment that contains the gene of interest.

3. **Sticky Ends vs. Blunt Ends**: The goal in producing recombinant DNA is often to create sticky ends, which are overhanging sequences that can easily anneal with complementary sequences. Exonucleases do not create sticky ends; instead, they create blunt ends or degrade the DNA entirely.

...