Question

according to the rules of complementary base pairing, which rna nucleotide sequence would pair with the dna template sequence tagca during elongation?
utcgt
aucgu
atcgt
uagca

Explanation:

Step1: Recall base pairing rules

In transcription, DNA-T pairs with RNA-A; DNA-A pairs with RNA-U; DNA-G pairs with RNA-C; DNA-C pairs with RNA-G.

Step2: Match each DNA nucleotide

DNA sequence: T A G C A
RNA pairs: A U C G U

Answer:

B. AUCGU