| 释义 |
cloning
clone C0414800 (klōn)n.1. A group of cells or organisms that are descended from and genetically identical to a single progenitor, such as a bacterial colony whose members arose from a single original cell.2. An organism developed asexually from another and genetically identical to it, such as an animal produced from an egg cell into which the nucleus of an adult individual has been transferred.3. A DNA sequence, such as a gene, that is transferred from one organism to another and replicated by genetic engineering techniques.4. One that copies or closely resembles another, as in appearance or function: "filled with business-school clones in gray and blue suits" (Michael M. Thomas).v. cloned, clon·ing, clones v.tr.1. To make multiple identical copies of (a DNA sequence).2. To create or propagate (an organism) from a clone cell: clone a sheep.3. To reproduce or propagate asexually: clone a plant variety.4. To produce a copy of; imitate closely: "The look has been cloned into cliché" (Cathleen McGuigan).v.intr. To grow as a clone.
[Greek klōn, twig.]
clon′al (klō′nəl) adj.clon′al·ly adv.clon′er n.cloning (ˈkləʊnɪŋ) n (Genetics) genetics the process of making an identical copy of an organism or cellThesaurus| Noun | 1. |  cloning - a general term for the research activity that creates a copy of some biological entity (a gene or organism or cell)biological research - scientific research conducted by biologistsreproductive cloning - making a full living copy of an organism; requires a surrogate motherbiomedical cloning, therapeutic cloning - nuclear transplantation of a patient's own cells to make an oocyte from which immune-compatible cells (especially stem cells) can be derived for transplant |
Translationsclone (kləun) verb to produce a copy of an animal or plant from a single cell of that animal or plant. 無性繁殖，複製 无性繁殖，克隆 noun a copy of an animal or plant produced from that animal or plant. 複製出的動植物 复制出的动植物cloning noungenetic cloning. 複製 复制，纯系化 cloning
cloning: see cloneclone,
group of organisms, all of which are descended from a single individual through asexual reproduction, as in a pure cell culture of bacteria. Except for changes in the hereditary material that come about by mutation, all members of a clone are genetically identical.
..... Click the link for more information. .cloningTo make a product that functions like another. See clone. See also cloning software.cloning
clon·ing (klōn'ing), 1. Growing a colony of genetically identical cells or organisms in vitro. 2. Transplantation of a nucleus from a somatic cell to an ovum, which then develops into an embryo; many identical embryos can thus be generated by asexual reproduction. 3. Replication of genetically identical embryos by microsurgical division of a blastocyst and implantation of resulting cells in animal wombs for gestation. 4. "Therapeutic" cloning: growth of somatic stem cells in an embryo that has been produced by fertilization in vitro and modified by replacement of its nuclear material with DNA from a host with deficient or diseased tissue (for example, heart, liver, pancreas). Subsequent harvesting of the stem cells for implantation in the host subject results in destruction of the embryo. 5. A recombinant DNA technique used to produce millions of copies of a DNA fragment. The fragment is spliced into a cloning vehicle (that is, plasmid, bacteriophage, or animal virus). The cloning vehicle penetrates a bacterial cell or yeast (the host), which is then grown in vitro or in an animal host. In some cases, as in the production of genetically engineered drugs, the inserted DNA becomes activated and alters the chemical functioning of the host cell. The generation of an exact living replica of an organism’s DNA—DNA cloning—or a cell—cell cloning—produced asexually from a single ancestor
Biotechnology DNA cloning in recombinant technology, DNA manipulation to produce multiple copies of a single gene or DNA segment
Genetics The process of asexually producing a group of genetically identical cells or clones, all from a single ancestor
Molecular biology The production of multiple, genetically identical molecules of DNA, cells, or organisms, which involves reverse transcription of purified mRNA into the corresponding cDNA before insertion into a vector, the synthesis of multiple copies of a DNA sequence, previously introduced into E coli, grown in the bacteria in culture media, removed, and DNA segments of interest isolatedclon·ing (klōn'ing) 1. Growing a colony of genetically identical cells or organisms in vitro. 2. Transplantation of a nucleus from a somatic cell to an oocyte, which then develops into an embryo; many identical embryos can thus be generated by asexual reproduction. 3. Replication of genetically identical embryos by microsurgical division of a blastocyst and implantation of resulting cells in animal wombs for gestation. 4. Therapeutic cloning: growth of somatic stem cells in an embryo that has been produced by in vitro fertilization and modified by replacement of its nuclear material with DNA from a host with deficient or diseased tissue (e.g., heart, liver, pancreas); subsequent harvesting of the stem cells for implantation in the host subject destroys the embryo. 5. A recombinant DNA technique used to produce millions of copies of a DNA fragment. The fragment is spliced into a cloning vehicle (i.e., plasmid, bacteriophage, or animal virus). The cloning vehicle penetrates a bacterial cell or yeast (the host), which is then grown in vitro or in an animal host. In some cases, as in the production of genetically engineered drugs, the inserted DNA becomes activated and alters the chemical functioning of the host cell. cloning specialized technology for the generation of identical copies of DNA molecules or of genetically identical copies of cells or organisms. See CLONE, THERAPEUTIC CLONING, CELL CULTURE, RECOMBINANT DNA TECHNOLOGY, DOLLY the sheep.cloning
Related to cloning: Human cloningWords related to cloningnoun a general term for the research activity that creates a copy of some biological entity (a gene or organism or cell)Related Words- biological research
- reproductive cloning
- biomedical cloning
- therapeutic cloning
|