Question

which mrna codon and amino acid correspond to the dna sequence tga? use complementary base pairing and this codon chart to answer the question. write the amino acid using its three - letter abbreviation. write stop for a stop codon. dna sequence tga mrna codon amino acid

Explanation:

Step1: Find the mRNA - complementary sequence

In transcription, DNA's T pairs with mRNA's A, G pairs with C, and A pairs with U. For the DNA sequence TGA, the complementary mRNA codon is ACU.

Step2: Use the codon - chart

Looking at the codon - chart, the first letter of the mRNA codon ACU is A, the second is C, and the third is U. According to the chart, the amino - acid corresponding to ACU is threonine, with the three - letter abbreviation Thr.

Answer:

mRNA codon: ACU
amino acid: Thr