ハイブリッドの遺産:ネアンデルタール人の導入とその自閉症への影響の進化的結果
Emily L Casanova1, Trenton W Holliday2,3
1Department of Neurology, School of Medicine, St. Louis University, St. Louis, Missouri, USA.
Abstract:
Recent work has shown that a subset of Neandertal-derived single-nucleotide polymorphisms (SNP) seems to be playing roles in autism susceptibility. We review this exciting research, as well as the known history of human migrations and interbreeding events between Homo sapiens and Neandertals, all while placing the current work within the context of hybrid dysgenesis and genetic incompatibilities. In addition to these "pushing" factors (purifying selection), we also explore potential "pulling" factors (positive selection), such as antagonistic pleiotropy and balanced polymorphism, which may influence the retention of otherwise weakly deleterious variants within the modern human genome. This work, along with other studies exploring associations between Neandertal-derived alleles and other neurodivergent conditions, has significant implications for human brain evolution as well as modern human health.
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