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प्रश्न
Differentiate between Euchromatin and Heterochromatin.
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उत्तर
| Sr. no | Euchromatin | Heterchromatin |
| 1. | It is a loosely packed region of chromatin. | It is a densely packed region of DNA. |
| 2. | It stains light. | It stains dark. |
| 3. | Euchromatin is a transcriptionally active chromatin region. | Heterochromatin is a transcriptionally nearly dormant portion of the genome. |
संबंधित प्रश्न
Describe the structure of a nucleosome.
Find the odd one out:
AUG codon gives ________ & ________ amino acids in prokaryotes & Eukaryotes respectively.
Write a note on the packaging of DNA in prokaryotes.
Write a note on the packaging of DNA in Eukaryotes.
Which of the following is the CORRECT statement with respect to formation of nucleosome?
In prokaryotes, the enzyme RNA polymerase recognizes the promoter by its ______.
Histone proteins are ______.
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.
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 ______
Histones are rich in ______.
Plasmid has been used as vector because ______.
Watson and Crick proposed the 'Double Helix' structure of DNA based on data produced by ______
What is the function of histones in DNA packaging?
Which of the following amino acid residues will constitute the histone core?
The most abundant prokaryotes helpful to human in making curd from milk and in the production of antibiotics are the ones categorised as ______ .
Total ATP production during EMP pathway is ______.
Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid.
Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome.
In the light of the above statements, choose the correct answer from the options given below:
