Cell Biology Interview Question:

What is the relation between the concepts of chromatin and chromosome? Are euchromatin and heterochromatin part of chromosomes?

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Every filament of chromatin is a complete DNA molecule (a complete double helix), i.e., a complete chromosome. A DNA molecule may form euchromatin and heterochromatin portions thus both are part of chromosomes.

Cell Nucleus Review - Image Diversity: chromosome structure
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