Bases common to RNA and DNA are

Options

A. adenine, guanine, cytosine
B. adenine , uracil, cytosine
C. adenine, guanine, thymine
D. guanine, uracil, thymine.

Explanation

To determine the bases common to RNA and DNA, we can follow these steps:

### Step 1: Identify the bases in RNA
- RNA (Ribonucleic Acid) contains four bases:
1. Adenine (A)
2. Guanine (G)
3. Cytosine (C)
4. Uracil (U)

### Step 2: Identify the bases in DNA
- DNA (Deoxyribonucleic Acid) also contains four bases:
1. Adenine (A)
2. Guanine (G)
3. Cytosine (C)
4. Thymine (T)

### Step 3: Compare the bases of RNA and DNA
- Now, we will compare the bases from both RNA and DNA:
- Common bases:
- Adenine (A)
- Guanine (G)
- Cytosine (C)
- Unique bases:
- RNA has Uracil (U)
- DNA has Thymine (T)

### Step 4: Conclusion
- The bases that are common to both RNA and DNA are:
- Adenine (A)
- Guanine (G)
- Cytosine (C)

### Final Answer
The bases common to RNA and DNA are Adenine, Guanine, and Cytosine.

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