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It is Semiochemical that is produced by one organism inducing a response in an organism of another species that is unfavorable to the emitter.
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It refers to the biological change resulting from an environmental alteration lasting about 10 % of the lifetime of the test organism.
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This is a Cell or organism with the genetic material packed in a membrane-surrounded structurally discrete nucleus and with well-developed cell organelles.
Note: The term includes all organisms except archaebacteria, eubacteria and cyanobacteria
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Totipotency is the ability of a single cell to divide and produce all the differentiated cells in an organism,
including extraembryonic tissues. Totipotent cells formed during sexual and asexual reproduction include spores and zygotes.the definition of pluripotency has come to refer to a stem cell that has the potential to differentiate into any of the three germ layers: endoderm (interior stomach lining, gastrointestinal tract, the lungs), mesoderm (muscle, bone, blood, urogenital), or ectoderm (epidermal tissues and nervous system). Pluripotent stem cells can give rise to any fetal or adult cell type. However, alone they cannot develop into a fetal or adult animal because they lack the potential to contribute to extraembryonic tissue, such as the placenta.
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Thursday, March 20, 2008
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GMO - Genetically modified organism (GMO) is Genetic material of an organism is altered with the help of genetic engineering techniques generally known as recombinant DNA technology. DNA molecules from one source is combined with the DNA of other in vitro into one molecule to create a new gene. The recombinant DNA is then transferred into an organism causing the expression of modified or novel traits. The product is also known as an Genetically Engineered Organism or GEO.
Examples Transgenic animals (mice, fish), transgenic plants (BT Cotton, Flavour Savour Tomato), or various microbes (fungi and bacteria) . The production and use of GMOs are ivolved in biology or medicine, for the production of pharmaceuticals and industrial enzymes, and for direct, and often controversial, applications aimed at improving human health (e.g., gene therapy) or agriculture (e.g., golden rice). For example, a gene from a jellyfish, encoding a fluorescent protein called GFP, can be physically linked and thus co-expressed with mammalian genes to identify the location of the protein encoded by the GFP-tagged gene in the mammalian cell. The indispensable use of GMO is in many areas of research, such as to study the mechanisms of human and other diseases .
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