When the sequence AGGCT of the DNA coding strand is transcribed, the corresponding mRNA sequence is:
A)TCCGA.
B)UGGCA.
C)AGCCU.
D)UGCCA.
E)AGGCT

Question

Quizplus · Accepted Answer

During transcription, DNA is copied into RNA with complementary base pairing. The sequence AGGCT would pair with UCCGA, but since RNA uses uracil (U) instead of thymine (T), the correct mRNA sequence would be AGCCU. Choice A is incorrect because it uses the wrong base for RNA (T instead of U). Choice B and D have the correct last three bases, but they are not a correct match for the first two bases. Choice E is the original DNA sequence, not the mRNA sequence that would result from transcription.

When the Sequence AGGCT of the DNA Coding Strand Is