In an experiment, $DNA$ is treated with a compound which tends to place itself amongst the stacks of nitrogenous base pairs. As a result of this, the distancebetween two consecutive base increases. from $0.34- 0.44\,nm$ calculate the length of $DNA$ double helix $($ which has $2 \times 10^9\,bP)$ in the presence of saturating amount of this compound.
$2 \times 10^{9} \times 0.44 \times 10^{-9} / \mathrm{bp}=0.88 \mathrm{~m}$
Adjacent nucleotides in a polynucleotide chain are joined by
Which one of the following is not applicableto $RNA$ ?
Nucleosomes are
The element absent in $RNA$ is
Distinguish between heterochromatin and euchromatin. Which of the two is transcription-ally active ?