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प्रश्न
Very Short Answer Question:
Which are the nucleosomal 'core' histones?
उत्तर
The nucleosome core is made up of two molecules of each of four types of histone proteins viz. H2A, H2B, H3 and H4.
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संबंधित प्रश्न
Describe the structure of a nucleosome.
Although a prokaryotic cell has no defined nucleus, yet DNA is not scattered throughout the cell. Explain.
Short Answer Question:
Write a short note on DNA packaging in the eukaryotic cell.
In prokaryotes, the enzyme RNA polymerase recognizes the promoter by its ______.
The chromatin is packed to form a solenoid structure of ______ diameter.
Telomere has a unique property 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.
The double helix structure of DNA was proposed by ______
Whittaker placed prokaryotes in:
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
