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The Science of Life: Chromatin and DNA Subunits
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Almost all DNA in the cells of higher organisms is found inside the nucleus in the substance chromatin. Before cell reproduction, chromatin changes to chromosomes. Inside chromosomes, DNA and... (more info)

Almost all DNA in the cells of higher organisms is found inside the nucleus in the substance chromatin. Before cell reproduction, chromatin changes to chromosomes. Inside chromosomes, DNA and proteins are twisted and folded.

Related Article: Learn more about genetic science.

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