From the sandy creek in the Cajon Pass, into Lone Pine Canyon, up and along the Blue Ridge to the summit of Mt. Baden-Powell, then edging along to Islip Saddle, the trail within proximatey to Wrightwood provides views of the extended metropolitan areas of Southern California and the Mojave Desert.
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. Guanine has two tautomeric forms, the major keto form (see figures) and rare enol form. It binds to cytosine through three hydrogen bonds.
Image Credit: Main Image: Cytosine is one of the four main bases found in DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), along with adenine, guanine, and thymine. Cytosine is one of the 5 nitrogenous bases that are attached to a 5 carbon sugar, pentose and a phosphate group to make nucleotides.ach nucleotide has three parts-a five carbon sugar, a phosphate group and an organic base. There are 2 variations of the sugar, depending on whether the nucleotide is in a DNA or RNA molecule. One of five different organic bases can be attached to each nucleotide-adenine, cytosine, guanine, thymine or uracil.