Full Forms :

$1.$ $\rm {DNA}$

$2.$ $\rm {RNA}$

$3.$ $\rm {hnRNA}$

$4.$ $\rm {UTR}$

Protein synthesis in an animal cell occurs

Explain the role of scientist :

$1.$ Avery, Macleod, Mccarty $(1933-44)$

$2.$ matthew meselson and franklin stahi $(1958)$

$A$ : $c-DNA$ libraries are important to scientists in human genomics.
$R$ : $c-DNA$ is synthetic type of $DNA$ generated from $mRNA$

$A$ : Polypeptide sequences are dictated by $DNA$ and represented by $mRNA$.
$R$ : Sequence of amino acids in a polypeptide can be predicted by the exact sequence of nucleotides on the $mRNA$ and template $DNA$