The ends of DNA molecules cut by restriction enzymes are "sticky" because
A) the enzymes coat them with protective, complex polysaccharides.
B) unless a second enzyme is added, the fragments stick to the restriction enzymes.
C) they are single-stranded.
D) the enzymes cut each strand of the DNA at different places.
E) they are single-stranded and the enzymes cut each strand of the DNA at different places.

Question

Quizplus · Accepted Answer

Sticky ends are single-stranded overhangs created when restriction enzymes cut DNA at staggered positions on each strand, allowing them to easily pair with complementary sequences.

The Ends of DNA Molecules Cut by Restriction Enzymes Are