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Chromatin material which remains condensed during interphase is called:-
- a)Heterochromatin
- b)Euchromatin
- c)Chromonemata
- d)Megachromatin
Correct answer is option 'A'. Can you explain this answer?
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Chromatin material which remains condensed during interphase is called...
Condensed Chromatin Material During Interphase
During interphase, the cell undergoes various activities such as growth, DNA replication, and preparation for cell division. The chromatin, which is the combination of DNA and proteins, is usually relaxed and dispersed throughout the nucleus. However, there is a fraction of chromatin material that remains condensed and tightly packed. This condensed chromatin is called heterochromatin.
Characteristics of Heterochromatin:
- Condensed Structure: Heterochromatin appears as dark-stained regions under a microscope due to its highly condensed structure.
- Transcriptionally Inactive: Heterochromatin is usually transcriptionally inactive, meaning that the genes within this region are not actively transcribed or expressed.
- Highly Repetitive DNA: Heterochromatin contains highly repetitive DNA sequences, such as satellite DNA and transposable elements.
- Stable Structure: Heterochromatin remains condensed throughout the cell cycle, including interphase.
Functions of Heterochromatin:
- Maintenance of Chromosome Integrity: Heterochromatin plays a crucial role in maintaining the structure and stability of chromosomes.
- Gene Regulation: The condensed nature of heterochromatin prevents the access of transcription factors and other regulatory proteins, leading to gene silencing.
- Centromere and Telomere Function: Heterochromatin is found at centromeres and telomeres, which are essential for proper chromosome segregation and chromosome end protection, respectively.
- Preservation of Chromosomal Architecture: Heterochromatin helps in organizing and compacting chromosomes within the nucleus, ensuring their proper spatial arrangement.
In conclusion, heterochromatin is the condensed chromatin material that remains during interphase. It has distinct characteristics and functions that contribute to the overall organization and regulation of the genome.
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Chromatin material which remains condensed during interphase is called:-a)Heterochromatinb)Euchromatinc)Chromonematad)MegachromatinCorrect answer is option 'A'. Can you explain this answer?
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