MathBench > Visualization

Chopping up plasmids

perplexed studentWhat's wrong with these gels?

Some mixed up students have recorded their gels incorrectly in their labbooks. They should be suspicious of each of the drawings below. Can you tell them why? (This is really a logical exercise, not a math exercise, which is why I didn’t put any numbers in. You can assume there are no odd conditions like overlapping bands in the same lane, or accidental breakage of the DNA into extra fragments).