If the DNA strand reads TAG ACG CGT ATA CTA TGA, what does the RNA strand look like that copies this code?

AUC UGC GCA UAU GAU ACU

Explanation:

This question is describing the process of transcription, which is the process by which a mRNA is synthesized using a DNA template. An enzyme called RNA polymerase synthesizes nucleotides on the mRNA strand using complementary base pairing rule i.e. Adenine to Uracil, Thymine to Adenine, Cytosine to Guanine and Guanine to Cytosine.

According to this question, If a DNA strand reads; TAG ACG CGT ATA CTA TGA, the mRNA sequence formed from complementary base pairing will look like: AUC UGC GCA UAU GAU ACU.