Which organism is most commonly used as a host in $r-DNA$ technology?

Where is $BamHI$ located in $pBR322$?

In the $pBR322$ plasmid,the ampicillin and tetracycline resistance genes contain recognition sites for how many restriction enzymes,respectively?

Which one of the following is regarded as a natural genetic engineer?

Insertion of a foreign $DNA$ at $BamHI$ site in an $E. coli$ cloning vector $pBR322$ results in the loss of antibiotic resistance towards :

Given below are two statements:
Statement $I:$
Restriction endonucleases recognise specific sequences to cut $DNA$,known as palindromic nucleotide sequences.
Statement $II:$
Restriction endonucleases cut the $DNA$ strand a little away from the centre of the palindromic site.
In the light of the above statements,choose the most appropriate answer from the options given below: