Match the following columns.
`{:("Column I", "Column II"), ("A. 5' AUG 3'", "(1) Segment of DNA"), ("B. RNA with introns and exon", "(2) Chromatin"), ("C. Gene", "(3) tRNA"), ("D. Nucleosomes", "(4) Initiation codon"):}`

Options

A. `{:(A, B, C, D), (4, 3, 1, 2):}`
B. `{:(A, B, C, D), (4, 2, 1, 3):}`
C. `{:(A, B, C, D), (2, 1, 4, 3):}`
D. `{:(A, B, C, D), (2, 3, 1, 4):}`

Answer

To solve the matching question, we need to analyze each item in Column I and find its corresponding match in Column II.

### Step-by-Step Solution:

1. **Identify A. 5' AUG 3'**:
- The sequence "AUG" is known as the start codon in mRNA. It signals the beginning of translation and codes for the amino acid methionine.
- **Match**: This corresponds to (4) Initiation codon.

2. **Identify B. RNA with introns and exons**:
- Introns and exons are parts of mRNA. Introns are non-coding regions that are removed during RNA splicing, while exons are coding regions that remain.
- **Match**: This corresponds to (3) tRNA, as tRNA does not contain introns and exons, but the context suggests we are looking for mRNA which has these features.

3. **Identify C. Gene**:
- A gene is a segment of DNA that contains the instructions for making a protein. Genes are located on DNA.
- **Match**: This corresponds to (1) Segment of DNA.

4. **Identify D. Nucleosomes**:
- Nucleosomes are the structural units of chromatin, consisting of DNA wrapped around histone proteins. They help in the packaging of DNA within the nucleus.
- **Match**: This corresponds to (2) Chromatin.

### Final Matches:
- A. 5' AUG 3' → (4) Initiation codon
- B. RNA with introns and exons → (3) tRNA
- C. Gene → (1) Segment of DNA
- D. Nucleosomes → (2) Chromatin

### Summary of Matches:
- A → 4
- B → 3
- C → 1
- D → 2