Highly condensed portions of the chromatin are called:
Correct answer: A. Heterochromatin
- A. Heterochromatin
- B. Nucleosome
- C. Super coils
- D. None of these
Explanation
Heterochromatin represents the highly condensed portions of chromatin. This dense packing makes the DNA inaccessible to the transcription machinery, leading to a transcriptionally inactive state. In contrast, euchromatin is less condensed and allows for active gene transcription. Nucleosomes are the structural units of chromatin, and supercoiling refers to the additional twisting of the DNA helix to aid in its compaction, not its condensation state. Therefore, heterochromatin is the best answer to describe highly condensed chromatin.
Last updated
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1000-2000 Okazaki fragment:
200 nucleotide + 8 histones:
2n= 16 in a primary spermatocyte, which is in the metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocytes?
A 10 nucleotide sequence i.e., RNA primer is constructed by:
A cell contains 8 chromosomes in its diploid state.When this cell undergoes meiosis, its daughter cells would contain: