Question

How are 'sticky ends' formed on a DNA strand? Why are they so called?

Answer 1

Sticky ends are produced by restriction enzymes. These enzymes cut the strand of DNA a little away from the centre of the palindrome sites but between the same two bases on the oppositestrands. ... These are called sticky ends because they form hydrogen bonds with their complementary cut counterparts.

Answer 2

When any 2 DNA strands are cut by the same restriction enzyme,it results in the formation of sticky ends on the DNA fragment.They are so called because the DNA strands can be joined that means they are sticky so they can be joined.