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NEET2007ZoologyMolecular Basis of InheritanceActual

The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

Options

  1. Asuper-coiling in nucleosomes
  2. BDNase digestion
  3. Cthrough elimination of repetitive DNA
  4. Ddeletion of non-essential genes.

Correct answer

A. super-coiling in nucleosomes

Step-by-step solution

The nucleosome model explains the packaging of histone proteins and DNA in the chromatin material which forms the chromosome. Related Theory A nucleosome is the basic structural unit of DNA packaging in eukaryotes. The structure of a nucleosome consists of a segment of DNA wound around eight histone proteins and resembles thread wrapped around a spool.

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