What is the three-base sequence on DNA or RNA that codes for an amino acid?

What is the three-base sequence on DNA or RNA that codes for an amino acid?

• A. Codon
• B. Anti-codon
• C. Exon
• D. Intron

Answer: (A)

The unit that codes for an amino acid is a codon. It’s a three-base sequence read in messenger RNA during translation, and each codon specifies which amino acid will be added to the growing protein chain. The DNA version of that information is a triplet, which is transcribed into the corresponding mRNA codon, while the tRNA brings in the correct amino acid by pairing its anticodon with the codon. Exons are the coding segments of a gene that remain in the mRNA after processing; introns are removed. So, the three-base code that directs amino acid incorporation is called a codon.

The unit that codes for an amino acid is a codon. It’s a three-base sequence read in messenger RNA during translation, and each codon specifies which amino acid will be added to the growing protein chain. The DNA version of that information is a triplet, which is transcribed into the corresponding mRNA codon, while the tRNA brings in the correct amino acid by pairing its anticodon with the codon. Exons are the coding segments of a gene that remain in the mRNA after processing; introns are removed. So, the three-base code that directs amino acid incorporation is called a codon.