Two common methods for obtaining large quantities of a DNA fragment or gene of interest is by PCR or ...

Two common methods for obtaining large quantities of a DNA fragment or gene of interest is by PCR or by DNA
  cloning (for example, construction of a DNA library). Explain one advantage of using PCR and one advantage of using
  DNA cloning in a living cell. What will be an ideal response?

Question 2

Some restriction enzymes create blunt DNA ends, without the complementary single-stranded overhangs of sticky ends. What is the advantage of using restriction enzymes that create sticky ends vs. blunt ends for creating recombinant
  DNA molecules? What will be an ideal response?