Question

in the figure below, how many recognition sites (cuts) were made in the dna sample in the lane for suspect 3?
options: 2, 4, 3, 5

Explanation:

Step1: Count bands for Suspect 3

Lane 3 has 5 DNA bands.

Step2: Calculate cuts

Number of cuts = number of bands - 1. So $5 - 1 = 4$.

Answer:

4