RNA codon for DNA codon ATG will be

Options

A. AUG
B. UTG
C. UAC
D. TAC

Answer

To find the RNA codon for the DNA codon ATG, we need to follow these steps:

### Step-by-Step Solution:

1. **Identify the DNA Codon**: The given DNA codon is ATG. This codon consists of three nucleotides: adenine (A), thymine (T), and guanine (G).

2. **Determine the Complementary RNA Bases**:
- In DNA, adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C).
- However, in RNA, thymine (T) is replaced by uracil (U). Therefore, we need to find the complementary RNA bases for each DNA base:
- A (adenine) in DNA pairs with U (uracil) in RNA.
- T (thymine) in DNA pairs with A (adenine) in RNA.
- G (guanine) in DNA pairs with C (cytosine) in RNA.

3. **Construct the RNA Codon**:
- Now, we can replace each DNA base in the codon ATG with its corresponding RNA base:
- A (from ATG) → U
- T (from ATG) → A
- G (from ATG) → C
- Therefore, the RNA codon corresponding to the DNA codon ATG is UAC.

4. **Final Answer**: The RNA codon for the DNA codon ATG is UAC.