What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under electron microscope? - Biology MCQ Biology | ExamTest.live | ExamTest.live

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

A $Base pairs$
B $Genes$
C $Nucleotides$
D $Nucleosomes$

Solution & Step-by-step Explanation

Nucleosomes are the basic units of DNA packaging in eukaryotes. They consist of a segment of DNA wound around a core of eight histone proteins. Under an electron microscope, chromatin appears like "beads-on-a-string," where the beads are nucleosomes.

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

A

Base pairs

B

Genes

C

Nucleotides

D

Nucleosomes

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Molecular Biology DNA Packaging

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