A nuclei acid probe might be used to-

Options

A. Insert genes into a host cell
B. Make DNA for gene cloning
C. Splice pieces of DNA
D. Find a nucleotide sequence

Answer

**Step-by-Step Solution:**

1. **Understanding Nucleic Acid Probes**: Nucleic acid probes are short sequences of nucleotides that are used to detect the presence of complementary sequences in a sample. They can bind to specific regions of target nucleic acid sequences.

2. **Analyzing the Options**:
- **Option A**: "To insert the gene into the host cell." This is incorrect because nucleic acid probes do not function to insert genes; they are used for detection.
- **Option B**: "To make DNA for gene cloning." This is also incorrect. While nucleic acid probes can play a role in identifying sequences for cloning, they do not directly make DNA.
- **Option C**: "To splice pieces of DNA." This is incorrect as well. Probes are not used for splicing DNA; they are used for detection.
- **Option D**: "To form a nucleotide sequence." This is the correct option. Nucleic acid probes can be used to identify and confirm the presence of specific nucleotide sequences.

3. **Conclusion**: Based on the analysis of the options, the correct use of a nucleic acid probe is to form a nucleotide sequence by detecting complementary sequences in a sample.

**Final Answer**: A nucleic acid probe might be used to form a nucleotide sequence.

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