LIFE SCIENCE

Detailed explanation-1: -The sequence of nitrogen bases (A, T, C, G) in DNA is what forms an organism’s traits. The nitrogen bases A and T (or U in RNA) always go together and C and G always go together, forming the 5′-3′ phosphodiester linkage found in the nucleic acid molecules.

Detailed explanation-2: -Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together. The binding of these base pairs forms the structure of DNA .

Detailed explanation-3: -The order of nitrogenous bases in DNA is arranged in such a way that they code for the protein molecule (that is Amino acids).

Detailed explanation-4: -The answer is the genetic code. The genetic code consists of the sequence of nitrogen 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.