Question

In an mRNA molecule, a group of three nitrogenous bases makes up a codon, and each codon codes for an amino acid. There are four different nitrogenous bases that can be arranged into different codons, but there are only 20 different amino acids. Based on this information, what conclusion can you make about the genetic code?

Each codon can be translated into more than one possible amino acid

Many of the possible combinations of nitrogenous bases do not code for anything and are not involved in gene expression.

Several different codons result in the production of the same amino ac

Answer 1

one codon codes for only one amino acid. but a same amino acid can be coded by different codon, we call them as degenerate codon. this is well explained by wobble hypothesis. the third position the codon is occupied by unusual nitrogenous base and is responsible for degeneracy.



can u say me which combination of the nitrogenous base doesn't code for amino acid??