Question
Biology Question on biotechnology
The end of fragments of DNA molecules are sticky due to
A
Unpaired bases
B
Free methylation
C
Endonucleases
D
Calcium ions
Answer
Unpaired bases
Explanation
Solution
The single-stranded free ends that project from each fragment of DNA duplex are unpaired bases and are known as "sticky ends". Sticky ends can join with similar complementary ends of DNA fragment from some other sources.