DNA tests, using organic debris to identify deoxyribonucleic acid (DNA) of a person. It has made a number of scientific evidence proving that DNA is the basis of heredity, among which are the following: a) in the normal process of cellular reproduction, chromosomes (DNA structures) are duplicated to provide nuclei children the same genes as the parent cell, b) mutations occur caused by an alteration of the structure of DNA that have the effect of a severe disruption of the offspring of affected cells, c) DNA extracted from a virus just for himself to play the whole virus, it seems clear that in the legal field and legal purposes, has all the genetic information for it. All Thus, the DNA can be very useful in law, not only to identify a person by the organic remains found where a crime has been committed (especially in crimes against sexual freedom or where violence has been exercised) but also to determine the biological parentage of a person.
deoxyribonucleic acid (DNA), genetic material of all cellular organisms and most viruses. DNA carries the information needed to direct protein synthesis and replication. Protein synthesis is called the production of proteins needed by the cell or virus for its activities and develop. Replication is the set of reactions by which DNA copies itself every time a cell or virus is reproduced and transmitted to offspring the information it contains. In almost all cellular organisms, DNA is organized in the form of chromosomes, located in the cell nucleus. STRUCTURE
Each DNA molecule consists of two strings or bands formed by a large number of chemical compounds called nucleotides. These chains form a sort of twisted ladder called a double helix. Each nucleotide consists of three units: a sugar molecule called deoxyribose, a phosphate group and one of four possible nitrogenous compounds called bases: adenine (abbreviated A), guanine (G), thymine (T) and cytosine (C). The deoxyribose molecule occupies the center of the nucleotide, flanked by a phosphate group to one side and a base on the other. The phosphate group is in turn attached to adjacent nucleotide deoxyribose chain. These linked deoxyribose-phosphate subunits form the sides of the ladder, the bases are faced by couples, facing inward, forming the rungs.
nucleotides each of the two chains that make up DNA established a specific association with the corresponding of the other chain. Due to the chemical affinity between the bases, nucleotides containing Adenine always coupled with those containing thymine, and cytosine-containing products that contain guanine. The complementary bases are joined together by weak chemical bonds called hydrogen bonds.
In 1953, the American biochemist James Watson and British biophysicist Francis Crick published the first description of the structure of DNA. His model became so important to understand protein synthesis, DNA replication and mutation, which the scientists received the 1962 Nobel Prize in Medicine for their work.
deoxyribonucleic acid (DNA), genetic material of all cellular organisms and most viruses. DNA carries the information needed to direct protein synthesis and replication. Protein synthesis is called the production of proteins needed by the cell or virus for its activities and develop. Replication is the set of reactions by which DNA copies itself every time a cell or virus is reproduced and transmitted to offspring the information it contains. In almost all cellular organisms, DNA is organized in the form of chromosomes, located in the cell nucleus. STRUCTURE
Each DNA molecule consists of two strings or bands formed by a large number of chemical compounds called nucleotides. These chains form a sort of twisted ladder called a double helix. Each nucleotide consists of three units: a sugar molecule called deoxyribose, a phosphate group and one of four possible nitrogenous compounds called bases: adenine (abbreviated A), guanine (G), thymine (T) and cytosine (C). The deoxyribose molecule occupies the center of the nucleotide, flanked by a phosphate group to one side and a base on the other. The phosphate group is in turn attached to adjacent nucleotide deoxyribose chain. These linked deoxyribose-phosphate subunits form the sides of the ladder, the bases are faced by couples, facing inward, forming the rungs.
nucleotides each of the two chains that make up DNA established a specific association with the corresponding of the other chain. Due to the chemical affinity between the bases, nucleotides containing Adenine always coupled with those containing thymine, and cytosine-containing products that contain guanine. The complementary bases are joined together by weak chemical bonds called hydrogen bonds.
In 1953, the American biochemist James Watson and British biophysicist Francis Crick published the first description of the structure of DNA. His model became so important to understand protein synthesis, DNA replication and mutation, which the scientists received the 1962 Nobel Prize in Medicine for their work.
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