Which of the following is incorrect for $DNA$ structure?
Backbone is constituted by sugar - phosphate
Bases in two strands are paired through :hydrogen bond
$11$ base pair in each turn
Both chains are binded to right side helically
By using diagram, select the correct option for $X$ and $Y$
The figure gives an important concept in the genetic implication of $DNA$. Fill the blanks $A, B$ and $C$.
The element absent in $RNA$ is
$DNA$ is double helix and
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it ?