...precise 5' or 3' single-strand overhangs (sticky ends), or no overhang (blunt ends). Two pieces of DNA...chewed-back” overhangs of 10-12 base pairs on the 5' end of both the vector and insert. These overhangs can easily...DNA that have complementary overhangs, or which are both blunt-ended, can then be fused together during.... They also cut specific target sequences, that range from 4 to 13 base pairs, and produce predictable... which naturally leaves a single adenosine (A) overhang on the 3' end of PCR products. The complementary...depending on the polymerase used, and the single A overhangs degrade over time, further reducing ligation efficiency...dsDNA fragments to generate 3' single-stranded overhangs. DNA polymerases synthesize DNA molecules using...