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Help with an A level biology question AQA

The question is
A tRNA molecule carrie the amino acid tyrosine and has an anticodon AAU. What is the DNA sequence that codes for tyrosine in this case?
I thought the answer would be TTA but the answer is AAT so I was just wondering what I did wrong?
Thanks :smile:

Reply 1

Sam1341

Hey, been a while since i did DNA stuff. But I think its because the anticodon AAU is complementary to the mRNA codon which would be UUA and the DNA made from this mRNA would be the opposite which would be AAT.

I think you confused what the mRNA would be instead of the DNA?