If an mRNA codon has the bases CUA, what bases will the corresponding tRNA anticodon have?

GAU

Explanation:

A mRNA codon is complementary to an tRNA anticodon. Codons are triplet sequences present on an mRNA molecule that a tRNA pairs with, in order to assemble a sequence of amino acids together. This sequence of amino acids is dictated by the order of codon sequences on mRNA.

Base pairing rules indicate that C always pairs with G, and that A always pairs with U (or T in the case of DNA)

Therefore, the codon CUA will pair with GAU.