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प्रश्न
What is the function of histones in DNA packaging?
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उत्तर
Histone are the basis protein that are rich in arginine and lysine. Histones form octamer on which DNA is wrapped and form nucleosome that means it helps in packaging of DNA in eukaryotes.
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संबंधित प्रश्न
Differentiate between Euchromatin and Heterochromatin.
Describe the structure of a nucleosome.
Explain the role of histones in forming a nucleosome.
In an octamer of the nucleosome, core DNA consists of ______ base pairs.
Draw a neat and labelled diagram of the Nucleosome.
Explain the formation of a nucleosome.
A typical nucleosome "bead" is made up of ______.
The octamer of histone protein is made of ______.
Telomere has a unique property of __________.
The length of DNA segment having 44 base pairs is ______
Nucleosome core is made of ______.
The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called ______.
Read the following and answer from given below:
In prokaryotes, DNA is circular and present in the cytoplasm but in eukaryotes, DNA is linear and mainly confined to the nucleus. DNA or deoxyribonucleic acid is a long polymer of nucleotides. In 1953, the first correct double-helical structure of DNA was worked out by Watson and Crick. Based on the X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin. It is composed of three components, i.e., A phosphate group, a deoxyribose sugar, and a nitrogenous base. Different forms of DNA are B-DNA, Z-DNA, A-DNA, C-DNA, and D-DNA.
Name the linkage present between the nitrogen base and pentose sugar in DNA.
Histones are rich in ______.
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
What do the 'beads on strings' structure of DNA packaging represent?
Part of chromatins which is densely packed stain darkly and is transcriptionally inactive is called ______.
Distinguish between heterochromatin and euchromatin with reference to staining property and activity.
Name the enzymes involved in replacement of gaps during RNA processing in prokaryotes and eukaryotes.
