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प्रश्न
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
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उत्तर
| Heterochromatin | Euchromatin |
| DNA is highly packed in the chromosome. | DNA is loosely packed in the chromosome. |
| It has a high density of DNA. | It has a low density of DNA. |
| It is only contained in Eukaryotes. | Prokaryotes and eukaryotes both contain euchromatin. |
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संबंधित प्रश्न
Although a prokaryotic cell has no defined nucleus, yet DNA is not scattered throughout the cell. Explain.
Which of the following is the CORRECT statement with respect to formation of nucleosome?
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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.
The double chain of B-DNA is coiled in a helical fashion. The spiral twisting of the B-DNA duplex produces ______
Histones are rich in ______.
Plasmid has been used as vector because ______.
Which one of the following statements about Histones is wrong?
What is the function of histones in DNA packaging?
The most abundant prokaryotes helpful to human in making curd from milk and in the production of antibiotics are the ones categorised as ______ .
In a mature, functional mRNA of eukaryotes______.
What is the nucleoid in prokaryotic cells?
What is the perimeter length of E. coli DNA?
What is the final diameter of the supercoiled nucleoid in prokaryotes?
What is the typical range for linker DNA length between nucleosomes?
What is the total DNA content per nucleosome?
