Jumping genes are found in

Which of the following pairs is $NOT$ correctly matched?

Explain the role of the following scientists:
$1.$ Avery, MacLeod, and McCarty $(1933-44)$
$2.$ Matthew Meselson and Franklin Stahl $(1958)$

$DNA$ acts as a template for the synthesis of which of the following?

Mutations which alter nucleotide sequence within a gene are called

Statement-$I$: The split gene arrangements represent probably an ancient feature of the genome.
Statement-$II$: Introns or intervening sequences do not appear in mature or processed $\text{RNA}$.