If the sequence of based on the mRNA codon is AUU, what would be the sequence of bases in the opposite strand assembled by the tRNA?

The mRNA codon AUU corresponds to the tRNA anticodon sequence UAA. The tRNA anticodon is complementary to the codon on the mRNA, but written in the opposite direction. Therefore, the sequence of bases in the opposite strand assembled by the tRNA would be AAU.

The opposite strand assembled by tRNA is known as the anticodon. The anticodon sequence is complementary to the mRNA codon. In this case, the mRNA codon is AUU. To find the anticodon, you need to determine the complementary sequence of bases.

The complementary bases are as follows:

A ↔︎ U
U ↔︎ A
G ↔︎ C
C ↔︎ G

So, in the opposite (anticodon) strand, the sequence of bases assembled by the tRNA would be UAA.