Final answer:
The correct DNA coding and template strands corresponding to the retroviral mRNA sequence UGACUA are AGACTA and TCTGAT, respectively, and the new mRNA sequence would be UGACUA. The correct option is C.
Step-by-step explanation:
The sequence of the retrovirus 5' 3' mRNA UGACUA would produce a DNA coding strand of AGACTA, a DNA template strand of TCTGAT, and a new mRNA sequence of UGACUA. Therefore, the correct answer would be C) DNA: AGACTA, Template: TCTGAT, mRNA: AUCUGA.
Keep in mind that the bases in DNA and RNA pair according to the rules that adenine (A) pairs with uracil (U) in RNA and thymine (T) in DNA, cytosine (C) pairs with guanine (G), so every base in the original RNA sequence will pair with its DNA complement to form the template strand, and then the coding DNA strand will be the reverse complement of the template strand.