Multiple choice

Alkaline phosphatase has a role in

  1. removing of unwanted nucleotides from the end of DNA

  2. adding of more nucleotides to DNA

  3. the removal of phosphate group

  4. adding of methyl group to one end of DNA

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct. As the process of ligation requires the presence of 5' phosphate group, Alkaline phosphatase is used to remove phosphate  and prevent unwanted self ligation.