A double-stranded DNA molecule is being transcribed, only part of which is shown below. If the molecule is translated from left to right, one of the nucleotides shown in bold would be the first transcribed in this small molecule. $\begin{array}{l}
5^{\prime} \text {-ATGATCGGATCGATCCAT-3' } \
3^{\prime} \text {-TACTAGCCTAGCTAGGTA-5' }
\end{array}$ Which of the following is the correct mRNA produced from the transcription of this DNA molecule?
A)5'-AUGAUCGGAUCGAUCCAU-3'
B)3'-AUGAUCGGAUCGAUCCAU-5'
C)5'-UACUAGCCUAGCUAGGUA-3'
D)3'-UACUAGCCUAGCUAGGUA-5'

Question

Quizplus · Accepted Answer

Transcription involves creating an mRNA strand from a DNA template. The mRNA is synthesized in the 5' to 3' direction, matching the DNA's coding strand (but with uracil replacing thymine). The correct mRNA sequence from the given DNA template is 5'-AUGAUCGGAUCGAUCCAU-3', which matches the DNA's coding strand with T replaced by U.

A Double-Stranded DNA Molecule Is Being Transcribed, Only Part of Which