A codon is a sequence of how many bases on DNA or RNA?

A codon is a sequence of how many bases on DNA or RNA?

• A. Three
• B. Two
• C. Four
• D. Five

Answer: (A)

A codon is a triplet of bases. In DNA or RNA, three nucleotides together form a codon that specifies a single amino acid (or a stop signal) during protein synthesis. This three-base length creates 64 possible codons (4 bases at each of the three positions), which is enough to code for all 20 amino acids with some redundancy. Translation reads mRNA in these three-base chunks, starting from a start codon and ending at a stop codon.

A codon is a triplet of bases. In DNA or RNA, three nucleotides together form a codon that specifies a single amino acid (or a stop signal) during protein synthesis. This three-base length creates 64 possible codons (4 bases at each of the three positions), which is enough to code for all 20 amino acids with some redundancy. Translation reads mRNA in these three-base chunks, starting from a start codon and ending at a stop codon.