To determine the correct answer regarding the similarities between DNA and RNA, let's analyze the options provided.

1. **Nucleotides**: Both DNA and RNA are composed of nucleotides, which are the essential building blocks of these nucleic acids. Nucleotides in both contain a sugar, a phosphate group, and a nitrogenous base.

2. **A double helix**: This is a characteristic structure of DNA. RNA, on the other hand, generally exists as a single strand without the double helical structure, although some RNA molecules can form secondary structures.

3. **Deoxyribose sugars**: This is specific to DNA (which contains deoxyribose), while RNA contains ribose sugars. Therefore, this option does not apply to both.

4. **Thymine**: Thymine is a nitrogenous base found only in DNA; RNA contains uracil in place of thymine.

Based on this analysis, the only option that indicates a common feature between DNA and RNA is:

### Final Answer
1) **Nucleotides**

Question

To determine the correct answer regarding the similarities between DNA and RNA, let's analyze the options provided.

1. **Nucleotides**: Both DNA and RNA are composed of nucleotides, which are the essential building blocks of these nucleic acids. Nucleotides in both contain a sugar, a phosphate group, and a nitrogenous base.

2. **A double helix**: This is a characteristic structure of DNA. RNA, on the other hand, generally exists as a single strand without the double helical structure, although some RNA molecules can form secondary structures.

3. **Deoxyribose sugars**: This is specific to DNA (which contains deoxyribose), while RNA contains ribose sugars. Therefore, this option does not apply to both.

4. **Thymine**: Thymine is a nitrogenous base found only in DNA; RNA contains uracil in place of thymine.

Based on this analysis, the only option that indicates a common feature between DNA and RNA is:

### Final Answer
1) **Nucleotides**

Knowee AI · Accepted Answer

To determine the correct answer regarding the similarities between DNA and RNA, let's analyze the options provided.

1. **Nucleotides**: Both DNA and RNA are composed of nucleotides, which are the essential building blocks of these nucleic acids. Nucleotides in both contain a sugar, a phosphate group, and a nitrogenous base.

2. **A double helix**: This is a characteristic structure of DNA. RNA, on the other hand, generally exists as a single strand without the double helical structure, although some RNA molecules can form secondary structures.

3. **Deoxyribose sugars**: This is specific to DNA (which contains deoxyribose), while RNA contains ribose sugars. Therefore, this option does not apply to both.

4. **Thymine**: Thymine is a nitrogenous base found only in DNA; RNA contains uracil in place of thymine.

Based on this analysis, the only option that indicates a common feature between DNA and RNA is:

### Final Answer
1) **Nucleotides**

DNA and RNA molecules are similar in that they both contain (1) nucleotides (2) a double helix (3) deoxyribose sugars (4) thymine

Question

DNA and RNA molecules are similar in that they both contain:

Solution

Final Answer

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