Which of the following organelles is related to genetic engineering?

What is the correct nomenclature for restriction enzyme-$I$,obtained from $Bacillus$ $amyloliquefaciens$ $H$?

The term "Molecular Scissors" refers to

Which of the following is known as the natural genetic engineer?

$A$ - Restriction endonucleases are also called 'molecular scissors'.
$R$ - When fragments generated by restriction endonucleases are mixed,they join together due to their sticky ends.

The $Ti$ plasmid of $Agrobacterium$ $tumefaciens$ stands for