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

1. AGGUAUCGCAU
2. UGGTUTCGCAT
3. UCCAUAGGCUA
4. ACCUAUGGCUA

Correct answer: AGGUAUCGCAU

Solution

The coding strand has the same sequence as the mRNA, except DNA uses T where RNA uses U. So converting every T in AGGTATCGCAT to U gives AGGUAUCGCAU.

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