An mRNA molecule with a complementary codon is transcribed from the DNA codon ACT. What is the nucleotide sequence of the tRNA anticodon?

To determine the nucleotide sequence of the tRNA anticodon that corresponds to the mRNA transcribed from the DNA codon ACT, it's important to understand the base pairing rules between nucleotides.

In this scenario, the DNA codon is ACT. During transcription, DNA is converted into mRNA, and the complementary bases follow specific pairings: adenine (A) pairs with uracil (U) in RNA, and cytosine (C) pairs with guanine (G). Therefore, when the DNA sequence ACT is transcribed into mRNA, it becomes UGA.

Next, tRNA molecules have anticodons that are complementary to the codons present in mRNA. Since the mRNA codon is UGA, we will match it with the corresponding tRNA anticodon. The base pairing rules still apply, so for UGA, the tRNA anticodon will pair as follows:

• U (in mRNA) pairs with A (in tRNA)

• G (in mRNA) pairs with C (in tRNA)

• A (in mRNA) pairs with U (in tRNA)

Therefore, the tRNA anticodon that corresponds to the mRNA codon UGA is ACU. This