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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
How are the following formed and involved in DNA packaging in a nucleus of a cell?
(ii) Nucleosome
(iii) Chromatin
Differentiate between Euchromatin and Heterochromatin.
In an octamer of the nucleosome, core DNA consists of ______ base pairs.
Very Short Answer Question:
Which are the nucleosomal 'core' histones?
Differentiate between Heterochromatin & Euchromatin.
Draw a neat and labelled diagram of the Nucleosome.
Write a note on the packaging of DNA in prokaryotes.
Which one of the following histone molecule is NOT double in one nucleosome?
Telomere has a unique property of __________.
Barr body in mammals represents ______.
Histone proteins are ______.
Find out the wrong statement about heterochromatin.
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.
Electron Transport System (ETS) is present in a eukaryotic cell in the:
Histones are rich in ______.
What do the 'beads on strings' structure of DNA packaging represent?
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.
