Question

The association of histone H$1$ with a nucleoside indicates

• A. The DNA double helix is exposed.
• B. Transcription is occurring.
• C. DNA replication is occurring.
• D. The DNA is condensed into a chromatin fibre.

Answer 1

The correct option is D The DNA is condensed into a chromatin fibre.

Histone proteins are the proteins which coils around the DNA in the eukaryotes and forms a rigid structure known as nucleosomes. The positively charged ends of the histones attracts the negatively charged ends of the DNA and leads to tight packaging. This solenoid structure undergoes further coiling to produce a chromatin fibre of 30-80 nm and then a chromatid of 700 nm.

So, the correct answer is option D.