If the sequence of bases in DNA is GCTTAGGCAA then the sequence if bases in its transcript will be

Options

A. GCT TAG G C A A
B. CGA A TC C GT T
C. CGA A U C C G U U
D. A A C G G A U U C G

Explanation

To determine the sequence of bases in the mRNA transcript from the given DNA sequence (GCTTAGGCAA), we will follow these steps:

### Step-by-Step Solution:

1. **Identify the DNA Sequence**: We start with the given DNA sequence:
- DNA: GCTTAGGCAA

2. **Understand Complementary Base Pairing**: In DNA and RNA, the base pairing rules are as follows:
- 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).

3. **Transcribe the DNA Sequence**: We will transcribe the DNA sequence into mRNA by replacing each DNA base with its complementary RNA base:
- G (from DNA) → C (in RNA)
- C (from DNA) → G (in RNA)
- T (from DNA) → A (in RNA)
- T (from DNA) → A (in RNA)
- A (from DNA) → U (in RNA)
- G (from DNA) → C (in RNA)
- G (from DNA) → C (in RNA)
- C (from DNA) → G (in RNA)
- A (from DNA) → U (in RNA)

4. **Write the mRNA Sequence**: After applying the above rules to the entire DNA sequence, we get:
- mRNA: CGAAUCCGUU

5. **Final Answer**: The sequence of bases in the mRNA transcript is:
- CGAAUCCGUU