Question

Choose the the statement that is incorrect about nucleosomes.

a. Most of the DNA in a eukaryotic cell at any given time is found in nucleosomes.
b. About 140 bp of DNA is wrapped around a histone core as a left-handed solenoid.
c. The nucleosome consists of 140 bp of DNA around which the histone proteins are bound as a right-handed helix that coats the DNA.
d. The histone proteins are positively charged.

Answer 1

The nucleosome consists of 147 bp of DNA around which the histone proteins are bound as a left-handed solenoid that coats the DNA. This contradicts option c, which states that the histone proteins are bound as a right-handed helix.

Step-by-step explanation:

The incorrect statement about nucleosomes is option c. The nucleosome consists of 147 bp of DNA around which the histone proteins are bound as a left-handed solenoid that coats the DNA, not a right-handed helix.