1.

How are sticky ends formed on DNA strands? Why are they so called?

Answer»

When a restriction enzyme cuts the strands of DNA, a little away from the center of the palindrome site, between the same two bases on the two strands, single-stranded portions are left at the ends.

  • These overhanging single stranded stretches of DNA at the ends, are called ‘sticky ends’.
  • They are so called because they easily form hydrogen bonds with their complementary cut counterparts with the action of enzyme ligase


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