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Genetically modified animals are animals that have been genetically modified for a variety of purposes including producing drugs, enhancing yields, increasing resistance to disease, etc. The vast majority of genetically modified animals are at the research stage while the number close to entering the market remains small.
As of 2004 there were five thousand known genetic diseases, and the potential to treat these diseases using transgenic animals is, perhaps, one of the most promising applications of transgenes. There is a potential to use human gene therapy to replace a mutated gene with an unmutated copy of a transgene in order to treat the genetic disorder.
A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques.The exact definition of a genetically modified organism and what constitutes genetic engineering varies, with the most common being an organism altered in a way that "does not occur naturally by mating and/or natural recombination". [1]
Transgenic hybrids are viable and grow more rapidly than transgenic salmon and other wild-type crosses in conditions emulating a hatchery. In stream mesocosms designed to simulate natural conditions, transgenic hybrids express competitive dominance and suppress the growth of transgenic and non-transgenic salmon by 82% and 54%, respectively. [65]
The first transgenic livestock were produced in 1985, [66] by micro-injecting foreign DNA into rabbit, sheep and pig eggs. [67] The first animal to synthesise transgenic proteins in their milk were mice, [68] engineered to produce human tissue plasminogen activator. [69] This technology was applied to sheep, pigs, cows and other livestock. [68]
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. Manipulation of an organism's genome For a non-technical introduction to the topic of genetics, see Introduction to genetics. For the song by Orchestral Manoeuvres in the Dark, see Genetic Engineering (song). For the Montreal hardcore band, see Genetic Control. Part of a series on ...
Megan and Morag, two domestic sheep, were the first mammals to have been successfully cloned from differentiated cells. [1] They are not to be confused with Dolly the sheep which was the first animal to be successfully cloned from an adult somatic cell [2] or Polly the sheep which was the first cloned and transgenic animal. [3]
A genetically modified mouse, genetically engineered mouse model (GEMM) [1] or transgenic mouse is a mouse (Mus musculus) that has had its genome altered through the use of genetic engineering techniques. Genetically modified mice are commonly used for research or as animal models of human diseases and are also used for research on genes.