Yes, amplification of DNA using techniques like Polymerase Chain Reaction (PCR) is typically performed before gel electrophoresis to generate a sufficient amount of DNA for detection and analysis. PCR can produce millions of copies of a specific DNA fragment, which can then be loaded onto the gel for separation and visualization.
In addition to enabling detection and analysis, DNA amplification can also be useful for downstream applications such as sequencing, cloning, and genetic engineering.
As for whether amplification allows better analysis and makes it easier, this can be a valid answer on an exam. However, it would be best to provide additional details and explanations to support your answer and demonstrate a comprehensive understanding of the topic.