The bacterial genome contains

Describe double helix structure of $DNA$ and how are the sequences of other strand predicted.
 

Given below are two statements:

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:

Assertion : In a $DNA$ molecule, $A-T$ rich parts melt before $G-C$ rich parts.

Reason : In between $A$ and $T$ there are three $H-$ bond, whereas in between $G$ and $C$ there are two $H-$ bonds.

Assertion : $DNA$ is associated with proteins.

Reason : $DNA$ binds around histone proteins that form a pool and the entire structure is called a nucleosome.

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by