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Extreme Life and Environments
There are 6,000 million base pairs of DNA in the nucleus of almost every one of your cells. The DNA is packaged into 46 bundles called chromosomes. These long strands of information encode two sets of 80,000 different genes, one set inherited from each of your parents. A single gene ranges in size from a hundred base pairs to millions of base pairs. Image credit: The Science Museum, UK.


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