Deoxyribonucleic acids double helix

According to the Watson-Crick model, two helically arranged chains are wound around each other to produce a double helix in double-strand deoxyribonucleic acids (Figure 29-2). The double helix rotates upward in a clockwise direction (P-helix). The screwlike rotation of the strands causes periodically recurring large and small furrows to occur at 2.2 or 1.2 nm. Thus, after 3.4 nm or ten base pairs, a complete rotation has occurred. The double helix diameter is about 2 nm. 

Genes are constructed from sets of deoxyribonucleic acids (DNA), which in turn consist of chains of nucleotides. These chains occur in matched pairs, twisted around each other (a double helix). 

DNA DNA (deoxyribonucleic acid) is a double-stranded helix of nucleotides... 

DNA (2-deoxyribonucleic acid) essential genetic material that is found in the nucleus of every cell a double helix with two polymeric strands, each strand composed of repeating units called nucleotides (2.3)... 

The nucleic acids known as deoxyribonucleic acid (DNA) are the molecules that store genetic information. This information is carried as a sequence of bases in the polymeric molecule. Remarkably, the interpretation of this sequence depends upon simple hydrogen bonding interactions between base pairs. Hydrogen bonding is fundamental to the double helix arrangement of the DNA molecule, and the translation and transcription via ribonucleic acid (RNA) of the genetic information present in the DNA molecule. 

DNA, short for deoxyribonucleic acid, is the coding machinery of life. The beauty of DNA is in its simplicity that results in the complexity of life. The double helix of DNA is made of the chemicals adenine (A), guanine (G), thymine (T), and cytosine (C). These chemical are bound in long stretches as AT and CG pairs,... 

DNA (deoxyribonucleic acid)—Carrier of genetic material that determines inheritance of traits. DNA is in chromosomes in every cell of the body except red blood cells and is copied when cells divide. DNA molecules are shaped like a double helix, and are composed of sequences of four bases adenosine (A), cytosine (C), guanine (G), and thymine (T). The sequence of the bases directs production of particular proteins by determining the sequence of amino acids in proteins. The double-helk structure of DNA helps it transmit genetic information. 

DNA Deoxyribonucleic acid is the repository of hereditary characteristics. The most commonly described form of DNA is the double-stranded form, arranged as a helix. Chromosomes are composed of double-stranded DNA. So called DNA fingerprinting offers a basis for evaluating the probability that blood, hair, semen or tissue samples originate from a given person, and thus offers a forensic tool as well as a means to determine lineages of humans and animals... 

Nucleic acids are of great interest because they are the units of heredity, the genes, and because they control the manufacture of proteins and the functions of the cells of living organisms. Hydrogen bonds play an important part in the novel structure proposed for deoxyribonucleic acid by Watson and Crick.1,5 This structure involves a detailed eomplement riness of two intertwined polynucleotide chains, which form a double helix.117 The complementariness in structure of the two chains was attributed by Watson and Crick to the formation of hydrogen bonds between a pyrimidine residue in one chain and a purine residue in the other, for each pair of nucleotides in the chains. 

DNA (deoxyribonucleic acid) The basic genetic material found in all living cells (and some viruses), providing the blueprint (i.e. genes) for construction of proteins. DNA is composed of sugars, phosphates, and bases arranged in a double helix, a double stranded, chain-like molecules composed of nucleotide base pairs. 

Described in 1953 by James Watson and Francis Crick, the double helix of DNA (deoxyribonucleic acid) is the cellular storehouse of genetic information. This biopolymer consists of a pair of complementary chains approximately 2.4 nanometers (9.5XlO-8 inches) in diameter and composed of... 

Because Franklin and Wilkins were hardly speaking to each other, Franklin left King s College in 1953 for Birkbeck College, also in London, where she finished her DNA work and became head of the team studying tobacco mosaic virus. Franklin died of ovarian cancer on April 16, 1958, at the age of 37. see also Deoxyribonucleic Acid (DNA) Double Helix Pauling, Linus Watson, James Dewey. 

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