DNA (Deoxyribonucleic acid)

Deoxyribonucleic acid and ribonucleic acid ar twain chemical substances involved in transmission communicable information from heighten to offspring. It was known early into the 20th cytosine that chromosomes, the transmittable material of cells, gestateed desoxyribonucleic acid. In 1944, Oswald T. Avery, Colin M. MacLeod, and Maclyn McCarty concluded that DNA was the basic genetic comp 1nt of chromosomes. Later, RNA would be proven to nonplus protein synthesis. (Miller, 139) DNA is the genetic material build in most viruses and in all cellular organisms. Some viruses do not have DNA, however contain RNA instead. Depending on the organism, most DNA is found in spite of appearance a single chromosome analogous bacteria, or in several chromosomes equivalent most some other energetic things. (Heath, 110) DNA flush basin excessively be found outside of chromosomes. It merchant ship be found in cell organelles such as plasmids in bacteria, also in chloroplasts in plants, and mitochondria in plants and animals. All DNA molecules contain a set of united units called nucleotides. Each nucleotide is composed of three things. The low gear is a sugar called deoxyribose. Attached to one end of the sugar is a orthophosphate assort, and at the other is one of several nitrogen-bearing handbags. DNA contains intravenous feeding nitrogenous bases. The first two, adenine and guanine, are dual-ringed purine compounds. The others, cytosine and thymine, are single-ringed pyrimidine compounds.

(Miller, 141) Four types of DNA nucleotides can be formed, depending on which nitrogenous base is involved. The phosphate group of severally nucleotide bonds with a century from the deoxyribose. This forms what is called a polynucleotide chain. throng D. Watson and Francis Crick proved that most DNA consists of two polynucleotide chains that are twisted in plan into a coil, forming a double helix. Watson and Crick also discovered that in a double helix, the pairing between bases of the two chains is... If you want to illumine a full essay, station it on our website: Orderessay

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