A-LevelBiologyGenetic technologyMay/June 2018Paper 4 Q515 Marks
5 (a) Pigs are farm animals used for livestock in some parts of the world. The first genetically modified (transgenic) pigs were produced in 1985. Foreign DNA was injected directly into the nuclei of zygotes. The foreign DNA was made up of two components: • the gene coding for human growth hormone • a section of mouse DNA that, in the presence of metal ions, allows transcription to begin.
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