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प्रश्न
Differentiate between Heterochromatin & Euchromatin.
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उत्तर
| No. | Heterochromatin | Euchromatin |
| 1. | In eukaryotic cells, some segments of chromonema/ chromosome during interphase and early prophase remain in a condensed state. These regions constitute heterochromatin. | The regions of chromonema which are in a non-condensed state constitute euchromatin. |
| 2. | It is genetically and transcriptionally inactive. | It is genetically and transcriptionally very much active and fast replicating. |
| 3. | It stains strongly and appears dark. | Euchromatic regions stain light. |
संबंधित प्रश्न
Describe the structure of a nucleosome.
Attempt any TWO of the following:
With the help of a suitable example illustrate ‘Palindrome’.
AUG codon gives ________ & ________ amino acids in prokaryotes & Eukaryotes respectively.
Repeating units of chromatin are known as ____________.
Flagella are present both in prokaryotic and eukaryotic cells, however, they differ in:
Part of chromatins which is densely packed stain darkly and is transcriptionally inactive is called ______.
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:
Chromatin can be defined as:
Which of the following correctly describes prokaryotic DNA?
What is the typical range for linker DNA length between nucleosomes?
