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Forms of DNA:DNA exists in several physical variations, known as forms. These variations consist of small physical differences between bonding angles, or connection distance, which result in a radically different shape of the overall DNA molecule.
Although there are many more recognized forms, three of the predominant, likewise, the only three observed in living organisms, are: A-DNA, B-DNA and Z-DNA (Seen Below). The B-DNA is the predominant DNA type found in the cells of living organisms; represented by the familiar double helix winding pattern.
Quadruplex Structures:DNA structures, rich in Guanine (G), form what are commonly known as G-Quadruplexes. These are 'tetramolecular' structures with many practical uses just waiting to be discovered. Currently, Quadruplex connections are being used in anti-cancer research.
Basically, a predominant base, found in a repeating chain and known as a tolemere, acts as a 'connector' allowing the DNA molecule to bind with other DNA molecules into a larger, super-molecular structure. Generally, the base in question (A,C,G,T) will determine the 'type' of quadruplex structures developed.
Branched DNA:DNA is known to fray at the ends where 'non-complimentary' regions are present in chains of otherwise complimentary connections. When such is the case, the frayed strands are able to 'hybridize' with other frayed strands, creating crossovers resulting in branch-like DNA structures.
Advanced Structures of DNA
Description : The work of geneticists who have labored for years to map human DNA is the subject of this offbeat yet highly informative documentary from the PBS series Nova. Host Robert Krulwich, a correspondent for ABC Nightline, visits with scientists who explain, in terms understandable to laymen, the enormous challenges faced and overcome by scientists working on the Human Genome Project.
Keywords : Cracking The Code Of Life (2001) - Dna Dvd, Nova, Robert Krulwich
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Description : What makes DNA different from hordes of competitors purporting to help readers understand genetics is that it is written by none other than James Watson, of Watson and Crick fame. He and his co-author Andrew Berry have produced a clear and easygoing history of genetics, from Mendel through genome sequencing. Watson offers readers a sense of immediacy, a behind-the scenes familiarity with some of the most exciting developments in modern science.
Keywords : Dna (paperback), James Watson, Dna Book, Learn Dna Reading, Read, Library, Study, Research, Resources
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Description : Advanced Data Structures presents a comprehensive look at the ideas, analysis, and implementation details of data structures as a specialized topic in applied algorithms. Data structures are how data is stored within a computer, and how one can go about searching for data within.
Keywords : Advanced Data Structures (hardcover)
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Description : The appearance of another volume in that excellent series, Methods in Enzymology, is always a cause for appreciation for those who wish to successfully carry out a particular technique or prepare an enzyme or metabolic intermediate without the tiresome prospect of searching through unfamiliar literature and perhaps selecting an unproven method which is not easily reproduced.
Keywords : Dna Structures, Part A, Synthesis And Physical Analysis Of Dna
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