The genes are in the form of

Which of the following statements are correct regarding $DNA$?
$(a)$ It is double stranded helically coiled.
$(b)$ The two strands are complementary and anti-parallel.
$(c)$ It has deoxyribose sugar and is acidic in nature.
$(d)$ It has only three nitrogen bases.

Jumping genes in maize were discovered by

Select the appropriate option for Transposons.

In $DNA$,guanine pairs with:

What will be the length of a $dsDNA$ strand,if it contains $100$ base pairs?