Question

Based on the gel image below, which lanes contain samples with DNA fragments of the same size? 2 3 4 5 1500 1200 1000 900 800 700 600 500 400 300 200 100 Lane 1 Lane 2 D Lane 3 Lane 4 Lane 5

Answer 1

Lanes 3 and 4 contain DNA fragments of the same size.

Step-by-step explanation:

The lanes that contain samples with DNA fragments of the same size are Lanes 3 and 4.

In the given gel image, the DNA ladder in Lane 1 is used as a reference to estimate the size of the PCR fragments in other lanes. The bright bands in Lanes 3 and 4 indicate PCR products generated with different primer pairs, resulting in DNA fragments of the same size in each lane.

By comparing the distances traveled by the DNA ladder fragments, the sizes of the fragments in Lanes 3 and 4 can be determined.