NEET 2011 · Class 12

Molecular Basis of Inheritance

What are the structures called that give an appearance as 'beads-on-string' in the chromosomes when viewed under electron microscope?

  1. (A)Genes
  2. (B)Nucleotides
  3. (C)Nucleosomes
  4. (D)Base pairs

The NCERT line that answers it

Verbatim line

The nucleosomes in chromatin are seen as 'beads-on-string' structure when viewed under electron microscope (EM) (Figure 5.4 b).

Chapter
Molecular Basis of Inheritance
Section
5.1.2 Packaging of DNA Helix
Page
4
Words matched
18 of 18

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How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that nucleosomes in chromatin are seen as 'beads-on-string' structure when viewed under electron microscope, which directly matches both the question and the correct answer.

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