How is an exonuclease functionally different from an endonuclease? Give an example of any two endonucleases other than Sal I. 2 mark
(i) Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA.
(ii) Examples of endonucleases: EcoR I, BamH I. 2mark