meaning of dna
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- Definition: DNA (deoxyribonucleic acid) is a type of macromolecule known as a nucleic acid. It is shaped like a twisted double helix and is composed of long strands of alternating sugars and phosphate groups, along with nitrogenous bases (adenine, thymine, guanine and cytosine).
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- noun, Genetics. 1. DNA in which one or more segments or genes have been inserted, either naturally or by laboratory manipulation, from a different molecule or from another part of the same molecule, resulting in a new genetic combination. Origin of recombinant DNA.
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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 of DNA for English Language Learners. : a substance that carries genetic information in the cells of plants and animals.
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REPRESSOR GENE Sense 1. gene [BACK TO TOP]. Meaning: (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. 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.
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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. [1930–35]. (dē′ĕn-ā′).
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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 order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences. DNA bases pair up with each other, A with T and C with G, to form units called base pairs.
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What do the letters DNA stand for.? Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things. All known cellular life and some viruses contain DNA.
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gene gene. noun. 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.
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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 ».
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dna DNA. n. scientifically, deoxyribonucleic acid, a chromonal double chain (the famous double helix) in the nucleus of each living cell the combination of which determines each individual's hereditary characteristics.. scientifically, deoxyribonucleic acid, a chromonal double chain (the famous double helix) in the nucleus of each living cell the combination of which determines each individual's hereditary characteristics.
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MRNA RNA [BACK TO TOP]. Meaning: (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.Classified under:Nouns denoting substances.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. Classified under: Nouns denoting substances.
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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.NA, n an acronym for deoxyribonucleic acid. A type of nucleic acid that contains genetic instructions for the development of cellular life forms. Capable of replicating itself and of producing another type of nucleic acid known as RNA. n the DNA specific to a bacterial strain.
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DNA DNA. DNA is the molecule that is the hereditary material in all living cells. Genes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.DNA is long and skinny, capable of contorting like a circus performer when it winds into chromosomes.enes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.
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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.
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DNA DNA. DNA is the molecule that is the hereditary material in all living cells. Genes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.DNA is long and skinny, capable of contorting like a circus performer when it winds into chromosomes. gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA. DNA is long and skinny, capable of contorting like a circus performer when it winds into chromosomes.
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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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DNA Definition: Shape, Replication, and Mutation Definition: DNA (deoxyribonucleic acid) is a type of macromolecule known as a nucleic acid. It is shaped like a twisted double helix and is composed of long strands of alternating sugars and phosphate groups, along with nitrogenous bases (adenine, thymine, guanine and cytosine).efinition: DNA (deoxyribonucleic acid) is a type of macromolecule known as a nucleic acid. It is shaped like a twisted double helix and is composed of long strands of alternating sugars and phosphate groups, along with nitrogenous bases (adenine, thymine, guanine and cytosine).
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What is DNA? Deoxyribonucleic acid (DNA) is a nucleic acid present in the cells of all living organisms. It is often referred to as the “building blocks of life,” since it encodes the genetic material that determines what an organism will develop into.
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dna DNA. n. scientifically, deoxyribonucleic acid, a chromonal double chain (the famous double helix) in the nucleus of each living cell the combination of which determines each individual's hereditary characteristics.NA. n. scientifically, deoxyribonucleic acid, a chromonal double chain (the famous double helix) in the nucleus of each living cell the combination of which determines each individual's hereditary characteristics.
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DNA A gene is a sequence of DNA that contains genetic information and can influence the phenotype of an organism. Within a gene, the sequence of bases along a DNA strand defines a messenger RNA sequence, which then defines one or more protein sequences.eoxyribonucleic 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. viruses
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How Do You Activate an Ancestry DNA Test Online? DNA, or deoxyribonucleic acid, is genetic material that exists in nearly all living organisms, including humans. Any organism with nucleus-based cells has DNA. It is the building blocks forming an organism, and the DNA combination an organism is born with remains the same.
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DNA 1. DNA - (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; DNA is the king of molecules. deoxyribonucleic acid, desoxyribonucleic acid.
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chromosome chromosome definition: The definition of a chromosome is a thread-like structure of DNA (nucleic acids and proteins) that carries genes. (noun) The X or Y gene that determines whether you will be a boy or a girl is an example of a chromosome....
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- 1. DNA - (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; DNA is the king of molecules. deoxyribonucleic acid, desoxyribonucleic acid.eoxyribonucleic acid, commonly called DNA, exists mainly in the nucleus and mitochondria of each cell in an organism. It consists of two long strands linked together in a structure resembling a ladder twisted into a spiral, called a double helix.
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DNA DNA, n an acronym for deoxyribonucleic acid. A type of nucleic acid that contains genetic instructions for the development of cellular life forms. Capable of replicating itself and of producing another type of nucleic acid known as RNA. n the DNA specific to a bacterial strain.