Question

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?

• A. AGGUAUCGCAU
• B. ACCUAUGCGAU
• C. UGGTUTCGCAT
• D. UCCAUAGCGUA

Answer 1

The Correct Option is D

To determine the corresponding mRNA sequence from a given DNA coding strand (AGGTATCGCAT), we need to understand the transcription process in biology. In transcription, the coding strand of DNA is directly used to build the mRNA strand by complementary base pairing:

• Adenine (A) on DNA pairs with Uracil (U) on mRNA.
• Thymine (T) on DNA pairs with Adenine (A) on mRNA.
• Cytosine (C) on DNA pairs with Guanine (G) on mRNA.
• Guanine (G) on DNA pairs with Cytosine (C) on mRNA.

Given the sequence from the coding strand: AGGTATCGCAT, let us apply these pairing rules:

1. A → U
2. G → C
3. G → C
4. T → A
5. A → U
6. T → A
7. C → G
8. G → C
9. C → G
10. A → U
11. T → A

This results in the mRNA sequence: UCCAUAGCGUA.

Thus, the correct option is UCCAUAGCGUA.