In $DNA$,the complementary bases are,

Identify the correct matching for Euchromatin and Heterochromatin from the given statements:
$I -$ Loosely packed
$II -$ Densely packed
$III -$ Darkly stained region
$IV -$ Lightly stained region
$V -$ Transcriptionally active chromatin
$VI -$ Transcriptionally inactive chromatin
Euchromatin $\quad\quad$ Heterochromatin

In what way does $RNA$ differ from $DNA$?

How many hydrogen bonds are present between guanine and cytosine?

$A$ $DNA$ fragment contains $120$ adenine and $120$ cytosine bases. What is the total number of nucleotides present in this fragment?

$A$ distinct mechanism that usually involves a short segment of $DNA$ with remarkable capacity to move from one location in a chromosome to another is called