How can a researcher visualize all of the DNA fragments present in an electrophoresis gel?
A)using a labeled probe with a sequence complementary to the desired DNA fragment
B)staining with ethidium bromide
C)staining with potassium chloride
D)using labeled antibodies
E)staining with Coomassie Blue

Question

Quizplus · Accepted Answer

Staining with ethidium bromide is a common technique used to visualize DNA fragments in electrophoresis gels. The ethidium bromide intercalates between base pairs of the DNA fragments and fluoresces under UV light, allowing for easy detection and visualization. Choices A, D, and E all involve labeling or staining with specific probes or antibodies, which may only visualize specific DNA fragments and not all of them. Choice C is not a common technique used in electrophoresis gel visualization.

How Can a Researcher Visualize All of the DNA Fragments