The mRNA codon AUU corresponds to a complementary tRNA anticodon. To find the anticodon, we need to replace each base with its complement:
- A (adenine) pairs with U (uracil)
- U (uracil) pairs with A (adenine)
- U (uracil) pairs with A (adenine)
Thus, the tRNA anticodon that pairs with the mRNA codon AUU would be UAA.
From your response options, the correct answer is **UAA**.