After completing the DNA extraction procedure on a patient s…

After completing the DNA extraction procedure on a patient specimen, you add the specimen extract to a well on an agarose gel (and in the well next to it, you add a molecular weight standard). After completion of the electrophoresis, you note that only the molecular weight standard is visible in the gel (and it has migrated as expected). Provide an explanation as to what might have occurred to create this result.