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

Options

A. ACUUGGGAA
B. TCUUGGGTT
C. ACUUCCCAA
D. None of the above

Answer

To determine the sequence of bases in mRNA from the given DNA sequence TGAACCCTT, we will follow these steps:

### Step 1: Identify the DNA Sequence
The provided DNA sequence is:
- TGAACCCTT

### Step 2: Understand the Base Pairing Rules
In DNA to mRNA transcription, the following base pairing rules apply:
- Adenine (A) in DNA pairs with Uracil (U) in RNA.
- Thymine (T) in DNA pairs with Adenine (A) in RNA.
- Cytosine (C) in DNA pairs with Guanine (G) in RNA.
- Guanine (G) in DNA pairs with Cytosine (C) in RNA.

### Step 3: Transcribe the DNA Sequence to mRNA
We will now transcribe the DNA sequence to mRNA using the base pairing rules mentioned above. The transcription occurs from the 3' to 5' direction of the DNA strand, resulting in an mRNA strand synthesized in the 5' to 3' direction.

1. **T** (DNA) → **A** (mRNA)
2. **G** (DNA) → **C** (mRNA)
3. **A** (DNA) → **U** (mRNA)
4. **A** (DNA) → **U** (mRNA)
5. **C** (DNA) → **G** (mRNA)
6. **C** (DNA) → **G** (mRNA)
7. **T** (DNA) → **A** (mRNA)
8. **T** (DNA) → **A** (mRNA)

Putting it all together, the mRNA sequence is:
- **A C U U G G G A A**

### Step 4: Write the Final mRNA Sequence
The final mRNA sequence transcribed from the DNA sequence TGAACCCTT is:
- **ACUUGGGAA**