NEET 2017
- Exam
- NEET
- Year
- 2017
- Subject
- Zoology
- Chapter
- Molecular Basis of Inheritance
NEET 2017 · Zoology · Molecular Basis of Inheritance
The association of histone H 1 with a nucleosome indicates:
The association of histone H1 with a nucleosome indicates:
Options
- ATranscription is occurring
- BDNA replication is occurring
- CThe DNA is condensed into a chromatin fibre
- DThe DNA double helix is exposed
Correct answer
C. The DNA is condensed into a chromatin fibre
Step-by-step solution
The association of H1 protein indicates the complete formation of nucleosome which requires DNA condensation. The DNA is therefore in condensed form. Histone H1 is one of the five main histone protein families (H₁, H2A, H2B, H₃ and H₄) which are components of chromatin in eukaryotic cells. H1 histones bind to the linker DNA exiting from the nucleosome core particle, thus making the nucleosome complete.