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Question
Differentiate between Euchromatin and Heterochromatin.
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Solution
| 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. |
RELATED QUESTIONS
How are the following formed and involved in DNA packaging in a nucleus of a cell?
(ii) Nucleosome
(iii) Chromatin
Although a prokaryotic cell has no defined nucleus, yet DNA is not scattered throughout the cell. Explain.
Very Short Answer Question:
Which are the nucleosomal 'core' histones?
Differentiate between Heterochromatin & Euchromatin.
Which of the following is the CORRECT statement with respect to formation of nucleosome?
Repeating units of chromatin are known as ____________.
A typical nucleosome "bead" is made up of ______.
The additional set of proteins required for packaging of chromatin at higher level are called ______.
The length of DNA can be calculated by ______.
The octamer of histone protein is made of ______.
The length of DNA segment having 44 base pairs is ______
Barr body in mammals represents ______.
The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called ______.
A stretch of euchromatin has 200 nucleosomes. How many bp will there be in the stretch and what would be the length of the typical euchromatin?
Which process occurs in the regulation of gene expression in prokaryotes but does not occur in the regulation of gene expression in eukaryotes?
Watson and Crick proposed the 'Double Helix' structure of DNA based on data produced by ______
What would happen if histones were to be mutated and made rich in acidic amino acids such as aspartic acid and glutamic acid in place of basic amino acids such as lysine and arginine?
Replication of DNA in eukaryotes is initiated by ______.
Part of chromatins which is densely packed stain darkly and is transcriptionally inactive is called ______.
Name the enzymes involved in replacement of gaps during RNA processing in prokaryotes and eukaryotes.
