Suppose a DNA fragment from a human gene has been cut such that it has sticky ends.A DNA fragment from bacteria with sticky ends complementary to those of the human DNA is added to the mix.What would prevent the complementary ends of the human DNA from rejoining, and thus encourage the formation of a recombinant DNA molecule?
A) DNA ligase
B) Restriction endonuclease EcoRI
C) Reverse transcriptase
D) A cloning vector
E) Nothing; the ends could rejoin.

Question

Quizplus · Accepted Answer

The sticky ends of the human DNA could potentially rejoin if they are complementary. However, the presence of bacterial DNA with complementary sticky ends encourages the formation of recombinant DNA.

Suppose a DNA Fragment from a Human Gene Has Been