Class 12 · Molecular Basis of Inheritance

Nucleosome Count in Mammalian Cells — NEET Biology

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Theoretically, how many such beads (nucleosomes) do you imagine are present in a mammalian cell?

NCERT Biology · Class 12 · Chapter 5 · Paragraph 21
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Adjacent to a frequently-asked paragraph in the same chapter.

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QuestionPredicted for NEET 2027

Arrange the following events in the correct sequence of DNA helix packaging inside a eukaryotic cell: 1. Formation of chromatin fibres from beads-on-string structure 2. DNA wraps around histone octamer to form nucleosome (200 bp each) 3. Condensation of chromatin fibres into chromosomes at metaphase 4. Organisation of nucleosomes into beads-on-string structure under EM 5. Association of DNA with positively charged histones

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