A Linear Strand of DNA Is 1,000 Bp Long

Multiple Choice

A linear strand of DNA is 1,000 bp long. A recognition sequence for the restriction enzyme Eco R1 is located 300 base pairs (bp) from the 5' end of this linear DNA molecule. Digesting this DNA molecule with Eco RI would produce ________.

A) one DNA fragment, 1,000 bp long
B) three DNA fragments, two of them 300 bp long and one 400 bp long
C) two DNA fragments, one 300 bp long and one 700 bp long
D) two fragments, each 500 bp long
E) none of the above