Occasionally, a double-stranded DNA molecule contains a uracil base (U) instead of T. If a U were present in the template strand of DNA, what base do you think would be incorporated into the RNA transcript at that position?
A)U
B)C
C)T
D)A
E)G

Question

Quizplus · Accepted Answer

RNA polymerase recognizes and pairs the uracil (U) with adenine (A) for transcription, instead of thymine (T) which pairs with adenine (A) in DNA replication. Therefore, if the template strand contains U instead of T, RNA polymerase will incorporate A in the RNA transcript instead of T.

Occasionally, a Double-Stranded DNA Molecule Contains a Uracil Base (U)