One of the similarities between DNA and RNA is that both

Options

A. Are polymers of nucleotides
B. Are capable of replicating
C. Have similar sugars
D. Have similar pyrimidine bases

Answer

To determine one of the similarities between DNA and RNA, let's analyze the provided options step by step:

### Step 1: Understand the Structure of DNA and RNA
- **DNA (Deoxyribonucleic Acid)**: It is a polymer made up of nucleotides that contain deoxyribose sugar, phosphate groups, and nitrogenous bases (adenine, guanine, cytosine, and thymine).
- **RNA (Ribonucleic Acid)**: It is also a polymer made up of nucleotides, but it contains ribose sugar instead of deoxyribose, phosphate groups, and nitrogenous bases (adenine, guanine, cytosine, and uracil).

### Step 2: Analyze the Options
1. **Polymers of Nucleotides**: Both DNA and RNA are indeed polymers composed of nucleotides. This is a true statement.
2. **Capable of Replicating**: DNA can replicate itself, but RNA cannot replicate in the same way. This statement is false.
3. **Have Similar Sugars**: DNA contains deoxyribose, while RNA contains ribose. Therefore, this statement is false.
4. **Have Similar Pyrimidine Bases**: DNA has thymine as one of its bases, while RNA has uracil instead of thymine. This statement is also false.

### Step 3: Conclusion
Based on the analysis, the only correct similarity between DNA and RNA is that **both are polymers of nucleotides**.

### Final Answer
The correct option is: **Both are polymers of nucleotides.**

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