Microsatellite DNA, also known as short tandem repeats (STRs), are highly polymorphic DNA sequences that are widely used in the case of studying the evolutionary relationships among various species of fauna. 

Microsatellite DNA analysis is a powerful tool for studying genetic diversity, population structure, and evolutionary relationships among different species of animals. 

The variations in the number of repeated DNA sequences in microsatellites can provide insights into the genetic similarities and differences between species, which can be used to infer their evolutionary relationships.