Question

Genetic code has

• A. more tRNAs than codons
• B. less codons than amino acids they code for
• C. more codons than amino acids they code for
• D. equal number of codons and amino acids

Answer 1

The correct option is C more codons than amino acids they code for

The genetic code includes 64 possible permutation and combinations, of three-letter nucleotide sequences that can be made from the four nucleotides in case of mRNA - A, U, G and C. Of the 64 codons, 61 represent amino acids and the remaining three are stop codons. Some amino acids are found to have more than one codon. So, the genetic code has more number of codons than the number of amino acids they code for.