Question

The sequence of an mRNA transcript is UGGCACUCCAG. What will be the sequence of the template DNA strand from which it was synthesized?

Answer 1

The correct answer is this one: "C. ACCGUGAGGUC."
The sequence of an mRNA transcript is UGGCACUCCAG. In mRNA uracil (U) replaces Thymine (T) and forms a base pair with adenine (A). On the other hand, Guanine (G) and Cytosine (C) form base pairs.

In summary,
U <--> A
G <--> C

From the transcript,

UGGCACUCCAG <- mRNA
ACCGUGAGGUC <- template, your answer!

Here are the choices
A. UGGCACUCCAG
B. ACCGTGAGGTC
C. ACCGUGAGGUC