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  4. What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under electron microscope ?

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Q. What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under electron microscope ?

AIPMTAIPMT 2011Molecular Basis of Inheritance

Solution:

Nucleosomes appear as 'beads-on-string' in the chromosome when viewed under electron microscope. The beads in 'beads-on-string' This one-way flow of information from DNA .