Consider the following statements

$I$. Flavr savr is a genetically modified tomato, which remains fresh and retains its flavour much longer than the normal tomato due to blocking of synthesis of fruit softening enzyme polygalacturonase

$II$. Recently, the $US$ Government has patented the Indian 'basmati' rice as Rice-tec

$III$. Viruses, bacteria and some other harmful organisms can be used as bioweapons in biological warfare

Which of the statements given above are correct?

Which of the following is not an application of genetic engineering in plants?

Identify the gene and its protein that controls corn borer from the given options

Removal of which chain results in maturation of proinsulin to insulin?