Question

Histone occupies the major grooves of DNA at an angle of

• A. 15${}^o$
• B. 90${}^o$
• C. 45${}^o$ to the helix axis
• D. 30${}^o$ to the helix axis

Answer 1

The correct option is D 30${}^o$ to the helix axis

• Nucleosomes are the basic structural packing unit of DNA in chromatin built from histone proteins around which DNA is wrapped. Histone occupies the major groove of DNA at an angle of 30 degrees.

So, the correct answer is "30${}^o$to the helix axis".