The bases that are common in both RNA and DNA are

Options

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

Answer

To determine the bases that are common in both RNA and DNA, we can follow these steps:

### Step 1: Identify the bases present in DNA
- DNA contains the following nitrogenous bases:
1. Adenine (A)
2. Guanine (G)
3. Cytosine (C)
4. Thymine (T)

### Step 2: Identify the bases present in RNA
- RNA contains the following nitrogenous bases:
1. Adenine (A)
2. Guanine (G)
3. Cytosine (C)
4. Uracil (U) (which replaces thymine in RNA)

### Step 3: Compare the bases in DNA and RNA
- Now, we compare the bases from both DNA and RNA:
- Common bases:
- Adenine (A)
- Guanine (G)
- Cytosine (C)
- Unique bases:
- Thymine (T) is only found in DNA.
- Uracil (U) is only found in RNA.

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

### Final Answer
The bases that are common in both RNA and DNA are Adenine, Guanine, and Cytosine.

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