In a nucleus, the number of ribonucleoside triphosphates is $10$ times the number of deoxy $x10$ ribonucleoside triphosphates, but only deoxy\ ribonucleotides are added during the $DNA$ replication. Suggest a mechanism.
$DNA$ polymerase is highly specific to recognise only deoxy ribonucleoside triphosphates. Therefore it cannot hold $RNA$ nucleotides,
Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by
$DNA$ polymerase links nucleotide by forming which type of bond:
The $A/U$ and $G/U$ ratio in $RNA$ is
Read the following statements and choose the set of correct statements:
$(a)$ Euchromatin is loosely packed chromatin
$(b)$ Heterochromatin is transcriptionally active
$(c)$ Histone octomer is wrapped by negatively charged DNA in nucleosome
$(d)$ Histones are rich in lysine and arginine
$(e)$ A typical nucleosome contains $400\,bp$ of DNA helix
Choose the correct answer from the options given below:
In the $340 A^o$ long $DNA$ strand