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प्रश्न
Differentiate between Euchromatin and Heterochromatin.
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उत्तर
| 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. |
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संबंधित प्रश्न
Explain the role of histones in forming a nucleosome.
In an octamer of the nucleosome, core DNA consists of ______ base pairs.
Differentiate between Heterochromatin & Euchromatin.
Write a note on the packaging of DNA in Eukaryotes.
Repeating units of chromatin are known as ____________.
The length of DNA segment having 44 base pairs is ______
The net electric charge on DNA and histones is ______.
Nucleosome core is made of ______.
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 ______
Plasmid has been used as vector because ______.
