A researcher conducted studies on proteins obtained from mouse livers. He discovered a novel protein and decided to obtain its genetic origins. The mRNA sequence he found was AUUCGGUACUGUACUAGC. What is the sequence of the DNA strand that was used for RNA synthesis

It should be complementary to the RNA strand: TAAGCCATGACATATCG

Explanation:

Be careful tho, it should not have U, instead T, because U is only for RNA.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.