2013年2月1日 星期五

DNA


DNA

In bacteria and other simple or prokaryotic cell organisms, DNA is distributed more or less throughout the cell. In the complex or eukaryotic cells that make up plants, animals and in other multi-celled organisms, most of the DNA resides in the cell nucleus. The energy-generating organelles known as chloroplasts and mitochondria also carry DNA, as do many viruses.

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