In the 21st century, human mitochondrial DNA (mtDNA) research on skeletal remains has seemed to show a genetic relationship between the Sadlermiut and various other related ethnic groups. An incorrect association led many to conclude the Sadlermiut were of Dorset and Thule ancestry due to apparent haplogroups A (46%) and D (54%) found in skeletal remains, attributed to the Thule (A 100%) and Dorset (D 100%) cultures respectively. This evidence, along with statistical differences, led to the errant belief that the Sadlermiut would have been remnants of the Dorset culture, with more recent gene flow from the Thule, providing further evidence for a cultural displacement between the two groups approximately one thousand years ago. Similarly, the same percentage of the presence of both haplogroup A and D was discovered among paleo-Aleut skeletal remains, while it also discovered D 27% and A 73% among the "Neo-Aleut" population. This inconsistency may be attributed to the fact that a population displacement did not occur within the Aleutian Islands between the Dorset and Thule transition, meaning that the Sadlermiut may have not in fact been the very last remnants of the Dorset culture.