Write the missing correlated terms.
RNA`to` Single helix: DNA `to` ________

Explanation

To solve the question, we need to identify the correlated terms for RNA and DNA based on their structures.

1. **Identify the structure of RNA**: RNA stands for ribonucleic acid and is known to have a single helix structure. This is a key characteristic of RNA.

2. **Identify the structure of DNA**: DNA stands for deoxyribonucleic acid. Unlike RNA, DNA has a double helix structure. This is a fundamental characteristic of DNA.

3. **Fill in the missing term**: Since RNA is to single helix, DNA, which is correlated to RNA, should be to double helix.

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