If the first nucleotide after the promoter on the bottom DNA strand in the simulation is changed from C to T, what would the resulting nucleotide be on the mRNA? Test your prediction by making the change and running the simulation.
A)A
B)C
C)T
D)U

Question

Quizplus · Accepted Answer

During transcription, DNA is used as a template to make mRNA. The DNA base C (cytosine) pairs with G (guanine) in DNA, but when transcribed to mRNA, the pairing changes so that the DNA's G pairs with mRNA's C. If the DNA base changes from C to T (thymine), then the corresponding mRNA base would change to A (adenine). However, RNA does not use thymine; instead, it uses uracil (U) to pair with adenine. Therefore, if the DNA base changes from C to T, the resulting mRNA base would be U (uracil).

If the First Nucleotide After the Promoter on the Bottom