AP BIOLOGY

Detailed explanation-1: -Because there are only 20 different amino acids but 64 possible codons, most amino acids are indicated by more than one codon. (Note, however, that each codon represents only one amino acid or stop codon.)

Detailed explanation-2: -Methionine and tryptophan are the only two amino acids that are coded for by just a single codon (AUG and UGG, respectively). The other 18 amino acids are coded for by two to six codons. Because most of the 20 amino acids are coded for by more than one codon, the code is called degenerate.

Detailed explanation-3: -The linear sequence of amino acids within a protein is considered the primary structure of the protein. Proteins are built from a set of only twenty amino acids, each of which has a unique side chain.

Detailed explanation-4: -Roughly 500 amino acids have been identified in nature, but just 20 amino acids make up the proteins found in the human body. Let’s learn about all these 20 amino acids and the types of different amino acids.