The picture below shows a stained gel. The gel was made using DNA
samples obtained from individual fish. Lane 8 is the positive control for a
species of carp. Lanes 1 through 7 show DNA from individual fish. Which pair
of lanes most likely shows DNA from different species of fish?
O
A. Lanes 4 and 5
O
B. Lanes 1 and 5
O
C. Lanes 2 and 7
O
D. Lanes 1 and 3