Highly-repetitive DNA, also known as satellite DNA, consists of short sequences of nucleotides repeated in tandem arrays. This type of DNA can be found in all eukaryotic genomes and varies greatly in length and function. Synonyms for highly-repetitive DNA include tandemly-repetitive DNA, satellite DNA, and minisatellite DNA. These repetitive sequences are typically found in non-coding regions of the genome, and their function is still not entirely understood. However, studies have shown that highly-repetitive DNA plays a role in genome stability and can even be used as genetic markers to track lineage and evolution. Despite its unclear function, highly-repetitive DNA is a fundamental component of the eukaryotic genome that contributes to genetic diversity and variation.