T IN DNA STANDS FOR CODE

A DNA strand has directionality: each phosphate is linked to the 3′ position of the preceding deoxyribose and to the 5′ position of the following deoxyribose. The backbone of each strand is composed of alternating 2-deoxyribose and phosphate linked together through phosphodiester bonds ( Fig.

T IN DNA STANDS FOR CODE

See also: Cell nucleus Genetic code Genetics Genomics Nucleic acid PlasmidĭNA is composed of two long polymer strands of the sugar 2-deoxyribose, phosphate, and purine and pyrimidine bases. Small amounts of DNA are also found in organelles that contain their own genomes, in autonomously maintained DNAs called plasmids, and in viruses. DNA is found primarily in the nuclei of eukaryotic cells and in the nucleoid of bacteria. The set of DNA molecules that contains all genetic information for an organism is called its genome. Deoxyribonucleic acid (DNA) is the common structure that forms the basic building blocks of life. Recombinant DNA is DNA that has been manipulated in the laboratory using biomolecular techniques.Ī linear polymer made up of a specific sequence of deoxyribonucleotide repeating units linked by 3′,5′-phosphodiester bonds and acting as the carrier of genetic information. In DNA transcription (the first step in the expression of genetic information), separated DNA strands serve as templates to form single-stranded RNA molecules. Hydrogen bonds between base pairs (adenine to thymine, and cytosine to guanine) maintain DNA's structural integrity.ĭuring cell division, the process of DNA replication ensures that genetic information propagates and is maintained from generation to generation. The most common structure of DNA is the double helix, which is made up of two antiparallel strands that wind around each other. DNA is a linear molecule that carries genetic information.ĭNA is composed of one or more long polymer strands consisting of alternating groups of sugar (deoxyribose) and phosphate groups, as well as purine and pyrimidine bases.

T in dna stands for