| During transcription of the DNA fragment shown, a single base is paired incorrectly. |
| \[-\,C-T-A-A-C-T\] Sense strand |
| \[-\,G-A-T-T-G-A\] Anti-sense strand |
| Which mRNA strand results? |
A) \[C-A-T-T-G-A\]
B) \[G-A-U-U-G-A\]
C) \[G-A-U-U-G-A\]
D) \[G-T-U-U-G-U\]
Correct Answer: B
Solution :
The correct mRNA strand should be \[G-A-U-U-G-A,\] in order to be complementary to the sense strand of the DNA fragments. However, with a single cytosine base incorrectly paired the mRNA could end up as \[G-A-U-U-C-A.\]
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