When inserting a piece of foreign dna into a plasmid, you use restriction enzymes to cut the foreign dna and plasmid dna so that the sticky ends

The last one 
the same; match

When you cut a piece of DNA you should cut with the same restriction enzyme so it creates the same overhangs...think of puzzle pieces...they have to be cut so that they overlap perfectly. If they don't, you can't put the puzzle back together!

Predator instincts is what causes it

Where is the picture at