is the generic name of the Hunter-gatherer population which lived in the Japanese archipelago during the Jōmon period (). The Jōmon people constituted a coherent population but displayed geographically defined regional subgroups. Multiple studies on the Jōmon population analyzed the genetic contribution to modern Japanese. Jōmon samples, represented by a specimen obtained from the Funadomari archaeological site on Rebun Island and two specimens obtained from Honshu, show that mainstream Japanese people have inherited an average of 10-20% Jōmon ancestry in their genome. The results of a study from 2021 inferred gene flow from the Jōmon population to the modern Japanese across all migration models tested, with genetic contributions ranging from 8.9 to 11.5%. In the same study, the mean Jōmon component of the modern Japanese individual estimated using the admixture analysis was 9.31%. Population genomic data from various Jōmon period samples show that they diverged from other East Asian people around 30,000 years ago (38-20kya). Following their migration into the Japanese archipelago in 15,000 to 20,000 BCE, they became largely isolated from outside geneflow. A tie between Jomon and Yana was detected but it was only marginally significant. Further validation studies using better-quality ancient samples would be necessary. Future studies, particularly additional samples of Paleo-Siberians and ancient Central Asians, would help to elucidate the reason for the potential genetic connection between Yana and Jomon people. Morphological characteristics Several studies of numerous Jōmon skeletal remains that were excavated from various locations in the Japanese archipelago allowed researchers to learn more about the Jōmon period population of Japan. The Jōmon people were relatively close to other East Asians, however shared more similarities with Native American samples. Within Japan, regional variance among different Jōmon remains was detected. Historically, the Jōmon people were classified as Mongoloid. Dental morphology suggests that the Jōmon had Sundadont dental structure which is more common among modern Southeast Asians and Indigenous Taiwanese, and is ancestral to the Sinodont dental structure commonly found among modern Northeast Asians, suggesting that the Jōmon split from the common "Ancestral East Asians" prior to the formation of modern Northeast Asians. According to the article "Jōmon culture and the peopling of the Japanese archipelago" by Schmidt and Seguchi (2014), the prehistoric Jōmon people descended from various paleolithic populations, which migrated into the Japanese archipelago, using different routes at different times. They concluded: "In this respect, the biological identity of the Jomon is heterogeneous, and it