Question

select the correct answer.

a researcher conducted studies on proteins obtained from mouse livers. he discovered a novel protein and decided to study its genetic origins. during his tests, the researcher found the mrna sequence auucgguacuguacuagc.

what is the dna sequence that was used for synthesizing this mrna sequence?

tttgctatactatagtac
attcggtactgtactagc
taagccatgacatgatcg
atgtctatactagctttt
ttgtctatgggtagcuuu

Explanation:

Identify the given mRNA sequence

$$ \text{mRNA: } \text{5'-AUUCGGUACUGUACUAGC-3'} $$

Determine the complementary DNA template strand sequence

$$
LATEXBLOCK0
$$

$$ \text{DNA Template: } \text{3'-TAAGCCATGACATGATCG-5'} $$

Match with the given options

$$ \text{Sequence: } \text{TAAGCCATGACATGATCG} $$

Answer:

• (A) TTTGCTATACTATAGTAC
• (B) ATTCGGTACTGTACTAGC
• (C) TAAGCCATGACATGATCG (Correct answer)
• (D) ATGTCTATACTAGCTTTT
• (E) TTGTCTATGGGTAGCUUU