Genetic engineering
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Scientists can now alter the genetic code – the very blueprint of life. Some scientists claim that this holds great promise for the future of medical research. But is it true, and what does it mean for animals?
What are genes?
Every living thing has a genetic code in each of its cells, which determines how it will grow and what it will grow into. As a human being, you have approximately 20–25,000 genes, contained in the chromosomes, within the nucleus of every cell in your body. The genes a...
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