$DNA$ sequences that code for proteins are known as:

In sea urchin $DNA$,which is double stranded,$17\%$ of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this $DNA$ are

If the amount of guanine in $DNA$ is $20 \%$,what is the amount of thymine (in $\%$)?

$S$ - Statement: $RNA$ contains thymine in its structure.
$R$ - Reason: $DNA$ does not contain thymine in its structure.

The double helix model of Watson and Crick is known as

In a $DNA$ molecule,adenine of one strand base pairs with . . . . . . on the other strand.