Question

which complementary base pairs are transcribed incorrectly? gac gat tag cat cug caa auc gua gac cug tag auc gat caa cat gua

Explanation:

In transcription from DNA to RNA, adenine (A) in DNA pairs with uracil (U) in RNA, thymine (T) in DNA pairs with adenine (A) in RNA, guanine (G) pairs with cytosine (C), and cytosine (C) pairs with guanine (G). For the DNA - sequence GAT, the correct RNA - sequence should be CUA, not CAA.

Answer:

C. GAT CAA