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- Describe heterochromatin and euchromatin when viewed under an electron microscopeCompare heterochromatin and euchromatin. What are the differences between them?The picture below depicts electron micrographs of the major levels of chromatin structure. Match each of the listed conditions with the most likely levels of chromatin structure under that condition.
- Forming nucleosomes and wrapping them into a 30-nm fiber provide part of the compaction of DNA in chromatin. If the fiber contains about six nucleosomes per 10 nm of length, what is the approximate compaction ratio achieved?When cells undergo apoptosis, their DNA becomes fragmented. When the DNA is run out on a gel, the resulting fragments differ in size by a standard amount, about 200 bp, so that the resulting separated DNA has a characteristic "ladder" appearance. Control Staurosporine treatedExplain the extended and condensed forms of extracted chromatin that have very different appearances in electron micrographs.