The two strands of a double helix model of $DNA$ are held together by hydrogen bonds between
sugar and phosphate groups.
sugar and nitrogenous bases.
phosphate groups and nitrogenous bases.
nitrogenous bases.
Which of the following are all Nucleotides
Full Forms : $NHC$
Describe double helix structure of $DNA$ and how are the sequences of other strand predicted.
If the distance between two consecutive base pairs is $0.34\, nm$ and the total number of base pairs of a $DNA$ double helix in a typical mammalian cell is $6.6 \times 10^{9}$ $bp,$ then the length of the $DNA$ is approximately
Histones are rich in the basic amino acid ...............and........