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DNA in American. dine den a nucleic acid that is bound in double helical chains by hydrogen bonds between the bases, forming the basic material in the chromosomes of the cell nucleus it contains the genetic code and transmits the hereditary pattern. Word origin of DNA .DNA is a double helix, while RNA is a single helix. Both have sets of nucleotides that contain genetic information. Credit udaix Shutterstock. Deoxyribonucleic acid or DNA is a molecule that contains the instructions an organism needs to develop, live and reproduce..A DNA is one of the possible double helical structures which DNA can adopt. A DNA is thought to be one of three biologically active double helical structures .Deoxyribonucleic acid is a molecule composed of two chains made of nucleotides that coil around each other to form a double helix carrying the genetic .Deoxyribonucleic acid an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms, constructed of two nucleotide strands coiled around each other in a ladderlike arrangement with the sidepieces composed of alternating phosphate .DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person s body has .Your DNA is what makes you uniquely you. It s that double helix that your genes are made of. Your DNA accounts for why you resemble your parents and it .Get the definition of DNA or deoxyribonucleic acid and learn about DNA structure and the history of its discovery..
A nucleic acid that carries the genetic information in cells and some viruses, consisting of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine..Dna definition, deoxyribonucleic acid an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms, constructed of two nucleotide strands coiled around each other in a ladderlike arrangement with the sidepieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine .Medical Definition of DNA any of various nucleic acids that are usually the molecular basis of heredity, are constructed of a double helix held together by hydrogen bonds between purine and pyrimidine bases which project inward from two chains containing alternate links of deoxyribose and phosphate, . DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus where it is called nuclear DNA , but a small amount of DNA .DNA stands for deoxyribonucleic acid, sometimes called “the molecule of life,” as almost all organisms have their genetic material codified as DNA. Since each person’s DNA is unique, “DNA typing” is a valuable tool in connecting suspects to crime scenes..DNA tests, or genetic tests, are used for a variety of reasons, including to diagnose genetic disorders, to determine whether a person is a carrier of a genetic mutation that they could pass on to .’DNA, or deoxyribonucleic acid, has an overall negative charge, so it might be used in a process called self assembly to create electronic devices.’ ‘Each chromosome carries a single strand of deoxyribonucleic acid that threads together about , genes.’.