$DNA$ is a double helix and:

Identify the complementary nitrogenous base for the adenine nitrogenous base in the structure of $DNA$.

$NHC$ (Non-Histone Chromosomal) structural proteins are:

It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material. This is written by

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:

The carrier of genetic information is