The modern concept of gene is
A segment of $DNA$ capable of crossing over
A functional unit of $DNA$
A segment of $DNA$
A segment of chromosome
Nucleotide pairs present in one turn of $DNA$ helix
Nucleotides are linked by
The term 'Nuclein' for the genetic material was used by
The figure gives an important concept in the genetic implication of $DNA$. Fill the blanks $A, B$ and $C$.
If the length of E. Coli $DNA$ is $1.36 \;mm$, calculate the number of base pairs in E. Coli.