If the sequene of bases in DNA is TGAACCCTT, the sequence of bases in m-RNA is

Options

A. ACUUGGGAA
B. TCUUGGGTT
C. ACUUCCCAA
D. TUCUGTUTU

Answer

To find the sequence of bases in mRNA from the given DNA sequence (TGAACCCTT), we need to follow the base pairing rules for transcription. Here’s a step-by-step solution:

### Step 1: Write down the DNA sequence
The DNA sequence provided is:
- TGAACCCTT

### Step 2: Identify the base pairing rules
During transcription, the base pairing rules are as follows:
- Adenine (A) in DNA pairs with Uracil (U) in mRNA
- Thymine (T) in DNA pairs with Adenine (A) in mRNA
- Cytosine (C) in DNA pairs with Guanine (G) in mRNA
- Guanine (G) in DNA pairs with Cytosine (C) in mRNA

### Step 3: Transcribe the DNA sequence to mRNA
Now, we will replace each base in the DNA sequence with its corresponding base in mRNA using the rules identified:
- T (Thymine) → A (Adenine)
- G (Guanine) → C (Cytosine)
- A (Adenine) → U (Uracil)
- C (Cytosine) → G (Guanine)

Applying these rules to the DNA sequence TGAACCCTT:
1. T → A
2. G → C
3. A → U
4. A → U
5. C → G
6. C → G
7. T → A
8. T → A

### Step 4: Write the mRNA sequence
Putting it all together, the mRNA sequence corresponding to the DNA sequence TGAACCCTT is:
- ACUUGGGAA

### Final Answer
The sequence of bases in mRNA is **ACUUGGGAA**.

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