One strand of DNA (non template) has base sequence CAG, TCG, GAT. What will be the sequence of bases in m-RNA :-

Options

A. AGC, CTA, CTA
B. GTC, AGC, CTC
C. CAG, UCG, GAU
D. GAC, TAG, CTA

Answer

To determine the sequence of bases in mRNA from the given non-template DNA strand, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Non-Template DNA Strand**:
The given non-template DNA strand has the sequence:
CAG, TCG, GAT.

2. **Understand the Relationship Between DNA and mRNA**:
- The mRNA is synthesized from the template strand of DNA, which is complementary to the non-template strand.
- However, the mRNA sequence will be identical to the non-template strand, with the exception that thymine (T) in DNA is replaced by uracil (U) in RNA.

3. **Write Down the Non-Template Strand**:
The non-template strand sequence is:
- CAG
- TCG
- GAT

4. **Convert Thymine to Uracil**:
- In the non-template strand, replace T with U:
- CAG → CAG
- TCG → UCG (T becomes U)
- GAT → GAU (T becomes U)

5. **Combine the mRNA Sequence**:
Therefore, the complete mRNA sequence will be:
- CAG, UCG, GAU

### Final Answer:
The sequence of bases in mRNA is: **CAG, UCG, GAU**.

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