Why are some ends of a DNA strand cut by restriction endonucleases called 'sticky ends'?
A) Because the enzyme cuts in the same position on both strands
B) Because of the complementarity of the single strands created by the enzyme
C) 'Sticky ends' is just another term for a 'blunt end'
D) Because such ends always end in a thymine, which readily binds to a complementary base more efficiently than any other nucleotide
E) Because the recognition sequence is palindromic

Question

Quizplus · Accepted Answer

Sticky ends are created by restriction endonucleases that make staggered cuts in the DNA strands, resulting in overhangs. These overhangs are complementary to each other, allowing them to easily pair and stick together with complementary sequences from different DNA molecules. This property is utilized in molecular cloning to join DNA fragments from different sources.

Why Are Some Ends of a DNA Strand Cut by Restriction