AP BIOLOGY

Detailed explanation-1: -The ge netic cod e consists of the sequence of ni trogen bases-A, C, G, U-in an mRNA chain. The four bases make up the “letters” of the genetic code. The letters are combined in groups of three to form code “words, ” called codons.

Detailed explanation-2: -DNA as a sentence In the sequence, each 3-letter word is a codon, specifying a single amino acid in a protein.

Detailed explanation-3: -The genetic code-made up of the four letters, A, T, G and C-stores the blueprint for proteins. DNA is first transcribed into RNA and then translated into proteins, which fold into specific shapes.

Detailed explanation-4: -What Is the Genetic Code? The genetic code consists of the sequence of nitrogen bases in a polynucleotide chain of DNA or RNA. The bases are adenine (A), cytosine (C), guanine (G), and thymine (T) (or uracil, U, in RNA).

Detailed explanation-5: -The three-letter nature of codons means that the four nucleotides found in mRNA-A, U, G, and C-can produce a total of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis.