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प्रश्न
How are the following formed and involved in DNA packaging in a nucleus of a cell?
(ii) Nucleosome
(iii) Chromatin
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उत्तर
(i) Histone octamer: It is a unit consisting of eight molecules of histone proteins (two molecules each of H2A, H2B, H3 and H4 histones). It interacts with the DNA to keep it associated with itself.
(ii) Nucleosome: DNA (negatively charged) winds around the histone octamer (positively charged) to form a nucleosome, which acts as a building block for packaging the DNA into chromatin.
(iii) Chromatin: It is a complex of DNA and proteins. Its main function is to efficiently package the DNA into the nucleus.
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संबंधित प्रश्न
Name the transcriptionally active region of chromatin in a nucleus.
Write a note on the packaging of DNA in prokaryotes.
Write a note on the packaging of DNA in Eukaryotes.
Which one of the following histone molecule is NOT double in one nucleosome?
Telomere has a unique property of __________.
Flagella are present both in prokaryotic and eukaryotic cells, however, they differ in:
______ are the amino acids of histones.
Which one of the following statements about Histones is wrong?
What is the function of histones in DNA packaging?
Define the Transfection.
