NURSING ANM AND GNM

Detailed explanation-1: -Adenine, guanine, cytosine and thiamine are the nitrogenous bases present in DNA whereas in case of RNA uracil substitutes thymine.

Detailed explanation-2: -Guanine is one of the four nitrogenous bases in DNA and RNA nucleotides. The structure consists of fused five and six membered rings, and has the chemical formula C5H5N5O C 5 H 5 N 5 O, making it a purine, or an aromatic compound with two rings fused together.

Detailed explanation-3: -DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The nucleotides attach to each other (A with T, and G with C) to form chemical bonds called base pairs, which connect the two DNA strands.

Detailed explanation-4: -DNA base pair. Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together.

Detailed explanation-5: -Guanine, along with adenine and cytosine, is present in both DNA and RNA, whereas thymine is usually seen only in DNA, and uracil only in RNA.