Which DNA sequence and amino acid correspond to the mRNA codon CAA?

The mRNA codon CAA corresponds to the DNA sequence GTT. This is because DNA and RNA have slightly different bases. In DNA, the bases are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) replaces thymine. So, when transcribing DNA to RNA, A pairs with U, T pairs with A, G pairs with C, and C pairs with G. Therefore, the DNA sequence GTT transcribes to the mRNA codon CAA.

The mRNA codon CAA codes for the amino acid glutamine. This is determined by the genetic code, which is a set of rules that defines how the four-letter code of DNA is translated into the 20-letter code of amino acids, which are the building blocks of proteins.