Restriction Endonucleases -- Question 3

You have a plasmid that consists of 8400 nucleotide base pairs (bp). You will use the restriction endonuclease Fok I to "digest" this plasmid. This enzyme has the following recogniton sequence:

If you assume that the four different nucleotide bases are distributed randomly within DNA, what is the expected number of cut sites for this enzyme within your 8400 bp plasmid? Enter the expected number in the text box and press the "TAB" key or click outside the text box.