The double helix model of Watson and Crick is known as

Who proposed that for a double-stranded $\text{DNA},$ the ratios between Adenine and Thymine and Guanine and Cytosine are constant and equal to one?

Which organism has a $DNA$ length of $0.136\, cm$?

In a $DNA$ molecule,if the base ratio $(A+T)/(G+C)$ is $0.3$ and the amount of $A+T$ nitrogenous bases is $30,000$,what will be the amount of $G+C$ nitrogenous bases in the $DNA$ (in $,000$)?

Which of the following structures is correct for $DNA$?

In one turn of the $DNA$ helix,there are $.........\,bp$ and its length is $.........$.