 These three variants were also found in gorilla and chimpanzee genomes but are not repeated in triplet form and are only present in around five copies overall.Based on this, the variants were given the names HLS1, HLS2 and HLS3, for "human lineage-specific", and together they were named the "HLS DUF1220 triplet".Hyper-amplification of the triplet resulted in the addition of ~149 copies of Olduvai specifically to the human lineage since its divergence from the genus "Pan" (chimpanzees and bonobos) approximately 6 million years ago.