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,
The association of histone $H_1$ with a nucleosome indicates that
$DNA$ strands are antiparallel because of the presence of
It is absent in $RNA$.
The double helix model of Watson and Crick is known as