Final answer:
Desiccated DNA takes on a rigid, dehydrated form and may have a higher buoyant density. Desiccation can negatively impact the quality and integrity of the DNA sample.
Step-by-step explanation:
When DNA becomes desiccated, it typically takes on a rigid, dehydrated form. In this state, the DNA molecule can become more susceptible to damage, such as breaking into smaller fragments. Additionally, the desiccated DNA may have a higher buoyant density due to its decreased water content. This means that it would be expected to float higher in a density gradient when centrifuged with cesium chloride. Overall, desiccation can negatively impact the quality and integrity of the DNA sample.