Final answer:
The sample in lane d produced the fewest fragments of DNA in the agarose gel (option 1).
Step-by-step explanation:
To determine which lane's sample produced the fewest fragments of DNA, we need to analyze the given information. The sizes of known fragments in lane D are provided as kilobase pairs (kb). We have unknown DNA samples in lanes A, B, and C. The question asks for the lane with the fewest fragments, which implies that we should look for the lane with the largest fragment size.
Looking at the known fragment sizes in lane D, we can see that it has the largest fragment size at 80 kb. Therefore, lane D contains the fewest fragments of DNA, making it the answer.
Lane A, B, and C have unknown DNA samples, so we cannot determine their fragment sizes based on the given information. We focus on lane D as it has the known fragment sizes, and its 80 kb fragment size indicates the fewest fragments.
Hence, the answer is option 1.
Complete question is as follows :
Which lane's sample produced the fewest fragments of DNA in the agarose gel? electrodes negative and positive sides. a, b, c, and d lanes. 80, 70, 60, 40, 25, 10, and 5. lane(d) of known fragment sizes. kilobase pairs. agarose gel in the back. unknown dna samples in the a, b, and c lanes. chamber is filled with buffer solution.
Option 1: Lane D
Option 2: Lane A
Option 3: Lane B
Option 4: Lane C