(Image: Public Domain) Guanine has the chemical formula C₅H₅N₅O and a molecular weight of 151.13 g/mol. It is a polar molecule due to the presence of the carbonyl (C=O) and amino (NH₂) groups. The ...

DNA is a linear molecule composed of four types of smaller chemical molecules called nucleotide bases: adenine (A), cytosine (C), guanine (G), and thymine (T). The order of these bases is called ...

Crick showed that the molecule of deoxyribonucleic acid ... These are either (1) adenine, or (2) thymine, or (3) guanine, or (4) cytosine with sugar and phosphate molecules attached to them.

thymine (T), adenine (A), cytosine (C), and guanine (G). These bases are the rungs of the DNA ladder. (It takes two bases to form a rung -- one for each side of the ladder.) A sugar molecule, a ...

Adenine and guanine are double-ring molecules called ... can only bond with double rings on the other. This keeps the DNA ...

According to this rule, the amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine in a double-stranded DNA molecule. This 1:1 ratio of A:T ...