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प्रश्न
Explain the role of histones in forming a nucleosome.
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उत्तर
(i) Histones are positively charged basic proteins which are organised to form a unit of eight molecules called histone octamer.
(ii) Histones are rich in the basic amino acids residues lysines and arginines which carry positive charges in their side chains.
(iii) The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome.
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संबंधित प्रश्न
Although a prokaryotic cell has no defined nucleus, yet DNA is not scattered throughout the cell. Explain.
Which of the following is the CORRECT statement with respect to formation of nucleosome?
Flagella are present both in prokaryotic and eukaryotic cells, however, they differ in:
Which of the following amino acid residues will constitute the histone core?
Replication of DNA in eukaryotes is initiated by ______.
Part of chromatins which is densely packed stain darkly and is transcriptionally inactive is called ______.
Define the Transfection.
Which of the following best describes DNA packaging?
What is a histone octamer?
Describe the hierarchical levels of eukaryotic DNA packaging.
