you have purified DNA from you recently deceased goldfish. Which of the following restriction nucleases would you use if you wanted to end up with DNA fragments with an average size of 70 kilobase pairs (kb) after complete digestion of the DNA? The recognition sequence for each enzyme is indicated in the right-hand column.
a. Sau3AI GATC
b. BamHI GGATCC
c. NotI GCGGCCGC
d. XzaI GAAGGATCCTTC