dna meaning wikipedia
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- Deoxyribonucleic acid (/diˌɒksiˌraɪbɵ.njuːˌkleɪ.ɨk ˈaesɪd/ ; ˈæSɪD) dna is a molecule that carries most of the genetic instructions used in the, development functioning and reproduction of all known living organisms and many. virusesranscription is carried out by a DNA-dependent RNA polymerase that copies the sequence of a DNA strand into RNA. To begin transcribing a gene, the RNA polymerase binds to a sequence of DNA called a promoter and separates the DNA strands.
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I NeeD AN EasY DNA DefinitioN ????? A nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists 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. nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists 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.
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REPRESSOR GENE • GENE (noun). The noun GENE has 1 sense: 1. (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity.Familiarity information: GENE used as a noun is very rare.he noun GENE has 1 sense: 1. (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity.
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DNA Deoxyribonucleic acid (/diˈɒksiˌraɪboʊnjʊˌkliːɪk, -ˌkleɪɪk/ ( listen);[1] DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
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DNA DNA. deoxyribonucleic acid: an extremely long, double-stranded nucleic acid molecule arranged as a double helix that is the main constituent of the chromosome and that carries the genes as segments along its strands: found chiefly in the chromatin of cells and in many viruses.
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gene gene. n. A hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and is transcribed into an RNA molecule that may function directly or be translated into an amino acid chain.ene. A segment of DNA, occupying a specific place on a chromosome, that is the basic unit of heredity. Genes act by directing the synthesis of proteins, which are the main components of cells and are the catalysts of all cellular processes.
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- DNA-The Molecule of Life. Deoxyribonucleic acid or DNA is the hereditary material present in the cells of all humans and other living organisms.
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Medical Definition of Deoxyribonucleic acid DNA sequence: The precise ordering of the bases (A, T, G, C) from which DNA is composed.Base pairs form naturally only between A and T and between G and C, so the base sequence of each single strand of DNA can be simply deduced from that of its partner strand.ase pairs form naturally only between A and T and between G and C, so the base sequence of each single strand of DNA can be simply deduced from that of its partner strand.
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- The modern working definition of a gene is a portion (or sequence) of DNA that codes for a known cellular function or process (e.g. the function make melanin molecules). A single 'gene' is most similar to a single 'word' in the English language. The nucleotides (molecules) that make up genes can be seen as 'letters' in the English language. Nucleotides are named according to which of the four nitrogenous bases they contain. The four bases are cytosine, guanine, adenine, and thymine.
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Definitions &Translations ribonucleic acid, RNA (noun). (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell. see more on Definitions.net ».
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What exactly is DNA? DNA means deoxyribonucleic acid and it is one of of the two nucleic acids contained in every cell (not only in fhe blood therefore) of every living being (also in plants). It's a macromolecule in which the sequences of 4 bases (nucleophiles) encodes the gene activity. and T and C and G fit together, and they form a ladder-like double helix shape. Each of these combinations instructs a single amino acid (small unit of protien) to do a certain job, whether it is A and T, T and A, C and G or G and C. Each person has a unique DNA and so do all animals etc.
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DNA Definition: Shape, Replication, and Mutation DNA contains the genetic information necessary for the production of cell components, organelles, and for the reproduction of life. Protein production is a vital cell process that is dependent upon DNA. Information contained within the genetic code is passed from DNA to RNA to the resulting proteins during protein synthesis.
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DNA DNA (deoxyribonucleic acid). A type of nucleic acid that constitutes the molecular basis of heredity. It is found principally in the nucleus of all cells where it forms part of the chromosome, or in the cytoplasm of cells lacking a nucleus, such as bacteria.
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Deoxyribonucleic acid DNA. Definition. noun. A double-stranded nucleic acid that contains the genetic information for cell growth, division, and function. Supplement. Structure: DNA is composed of two strands that twist together to form a helix.
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Contents: DNA vs RNA Definition. A nucleic acid that contains the genetic instructions used in the development and functioning of all modern living organisms. DNA's genes are expressed, or manifested, through the proteins that its nucleotides produce with the help of RNA. The information found in DNA determines which traits are to be created, activated, or deactivated, while the various forms of RNA do the work.
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Gene Gene. Definition. noun, plural: genes. (cell and molecular biology). The fundamental, physical, and functional unit of heredity. Supplement. It is because a gene is a segment of DNA (on a specific site on a chromosome) that is responsible for the physical and inheritable characteristics or phenotype of an organism.It also specifies the structure of a protein, and an RNA molecule. A gene is formerly called a factor.t is because a gene is a segment of DNA (on a specific site on a chromosome) that is responsible for the physical and inheritable characteristics or phenotype of an organism. It also specifies the structure of a protein, and an RNA molecule. A gene is formerly called a factor.
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What does DNA mean? DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. 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.he information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
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DNA Definition of DNA for English Language Learners. : a substance that carries genetic information in the cells of plants and animals.
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Crusty Eyelid or Eyelashes Focus On. Find an Ophthalmologist. Crusty eyelids or eyelashes occur when discharge from the eye dries on the lids and lashes. The symptoms and possible related eye conditions/diseases in this section are for general reference only, and do not contain all visual symptoms or all possible related conditions or diseases.
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Gene Gene. Definition. noun, plural: genes. (cell and molecular biology). The fundamental, physical, and functional unit of heredity. Supplement. It is because a gene is a segment of DNA (on a specific site on a chromosome) that is responsible for the physical and inheritable characteristics or phenotype of an organism.It also specifies the structure of a protein, and an RNA molecule.A gene is formerly called a factor.t is because a gene is a segment of DNA (on a specific site on a chromosome) that is responsible for the physical and inheritable characteristics or phenotype of an organism. It also specifies the structure of a protein, and an RNA molecule. A gene is formerly called a factor.
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DNA: Definition, Structure & Discovery Deoxyribonucleic acid or DNA is a molecule that contains the instructions an organism needs to develop, live and reproduce. These instructions are found inside every cell, and are passed down from parents to their children.
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DNA Definition and Structure DNA Definition. DNA is the acronym for deoxyribonucleic acid, usually 2'-deoxy-5'-ribonucleic acid. DNA is a molecular code used within cells to form proteins. DNA is considered a genetic blueprint for an organism because every cell in the body that contains DNA has these instructions, which enable the organism to grow, repair itself, and reproduce.
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- Dna sequencing. Dna sequencing. (Science: molecular biology) Any lab technique used to find out the sequence of nucleotide bases in a dna molecule or fragment. Examples are dideoxy sequencing and maxam-gilbert sequencing.The deciphering of the exact order of base sequence in a nucleotide Sequence.Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 3 October 2005, at 21:16.This page has been accessed 16,390 times.he deciphering of the exact order of base sequence in a nucleotide Sequence. Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 3 October 2005, at 21:16.This page has been accessed 16,390 times.
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Definitions &Translations deoxyribonucleic acid, desoxyribonucleic acid, DNA (noun). (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information.see more on Definitions.net ».biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information.
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DNA Deoxyribonucleic acid (/diˈɒksiˌraɪboʊnjʊˌkliːɪk, -ˌkleɪɪk/ ( listen); DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
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DNA Identification Law and Legal Definition DNA Identification Law and Legal Definition DNA identification is a method of identifying an individuals patterned chemical structure of genetic information by analyzing the deoxyribonucleic acid (DNA) in order to identify the source of a biological specimen such as blood, tissue, or hair.