The sequence of bases on part of a molecule of DNA is shown.
TACAAATGCCA Sense strand ATGTTTACTGGT Antisense strand What is the sequence of bases in mRNA transcribed from this sequence ?

Options

A. ATGTTTACTGGT
B. AUGUUUACUGGU
C. TACAAATGACCA
D. UACAAAUGACCA

Answer

To find the sequence of bases in mRNA transcribed from the given DNA sequence, we need to follow these steps:

### Step 1: Identify the Sense and Antisense Strands
The given DNA sequence is:
- Sense strand: TACAAATGCCA
- Antisense strand: ATGTTTACTGGT

### Step 2: Understand the Transcription Process
During transcription, the mRNA is synthesized from the DNA template. The mRNA sequence is complementary to the antisense strand of DNA and follows the base pairing rules:
- Adenine (A) pairs with Uracil (U) in RNA (instead of Thymine (T) in DNA)
- Thymine (T) pairs with Adenine (A)
- Cytosine (C) pairs with Guanine (G)
- Guanine (G) pairs with Cytosine (C)

### Step 3: Transcribe the Antisense Strand to mRNA
Using the antisense strand (ATGTTTACTGGT), we will transcribe it to mRNA:
- A (from DNA) → U (in RNA)
- T (from DNA) → A (in RNA)
- G (from DNA) → C (in RNA)
- T (from DNA) → A (in RNA)
- T (from DNA) → A (in RNA)
- A (from DNA) → U (in RNA)
- C (from DNA) → G (in RNA)
- T (from DNA) → A (in RNA)
- G (from DNA) → C (in RNA)
- G (from DNA) → C (in RNA)
- T (from DNA) → A (in RNA)

### Step 4: Write the mRNA Sequence
Putting it all together, the mRNA sequence transcribed from the antisense strand ATGTTTACTGGT is:
- mRNA: UACAAAUCCGGA

### Final Answer
The sequence of bases in mRNA transcribed from the given DNA sequence is:
**UACAAAUCCGGA**

---