Solve this:

126. Which of the following is a correct statement :-

(l) DNA ligase enzyme is used to create sticky ends so that they can be easily joined.
(2) Recombinant insulin is commonly being produced from transgenic E.coli
(3) "Flavr-Savr" vareity of tomato has enhanced the production of ethylene which improve its ripening
(4) "Bt" in "Bt-cotton" indicates that cotton which is developed by Biotechnology