$A$ human diploid cell contains ............ bp.

In a given $DNA$ segment,the number of nucleotides of guanine is $75$ and those of thymine is $75$. The total number of nucleotides in the segment will be:

Select the correct statement from the following.

Mobile genetic elements $(transposons)$ replicate via an $.....$ intermediate.

In a given species,which of the following ratios is constant?

In the polynucleotide chain of $DNA$,a nitrogenous base is linked to the $-OH$ of