Which of the following is/are true for both RNA and DNA?

Options

A. RNA is double-stranded,DNA single stranded
B. RNA has the base uracil in place of the thymine in DNA.
C. RNA contains the sugar deoxyribose, while DNA contains the sugar ribose.
D. DNA is hereditary material, but when it is absent, RNA can function as hereditary material.

Explanation

To determine which statements are true for both RNA and DNA, we need to analyze the characteristics of each molecule. Here’s a step-by-step breakdown of the statements provided:

### Step 1: Analyze the Statements
1. **Statement 1**: "RNA is double-stranded and DNA is single-stranded."
- **Evaluation**: This statement is incorrect. RNA is typically single-stranded, while DNA is double-stranded.

2. **Statement 2**: "RNA has uracil in place of thymine, and DNA has thymine."
- **Evaluation**: This statement is correct. RNA contains uracil, whereas DNA contains thymine.
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