Question

Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid.

Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome.

In the light of the above statements, choose the correct answer from the options given below:

विकल्प

• Both Statement I and Statement II are false.

• Statement I is correct but Statement II is false.

• Statement I incorrect but Statement II is true.

• Both Statement I and Statement II are true.

Answer 1

Statement I incorrect but Statement II is true.

Explanation:

Prokaryotic DNA is found in an irregular region called the nucleoid; however, unlike in eukaryotes, it is not organised into nucleosomes or tightly associated with proteins. In contrast, eukaryotic DNA, which carries a negative charge, wraps tightly around positively charged histone proteins to create nucleosomes. This interaction between histones and DNA phosphate groups is what allows genetic material to be efficiently packed and organised within the cell nucleus.