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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
Attempt any TWO of the following:
With the help of a suitable example illustrate ‘Palindrome’.
Find the odd one out:
Repeating units of chromatin are known as ____________.
Find out the wrong statement about heterochromatin.
Which one of the following cell organelle is considered as ‘Cell within a cell’?
Watson and Crick proposed the 'Double Helix' structure of DNA based on data produced by ______
______ are the amino acids of histones.
In a mature, functional mRNA of eukaryotes______.
Define the Transfection.
Nucleosomes are the repeating units of chromatin the part between adjacent nucleosomes is called ______ .
