Functional Architecture of Deleterious Genetic Variants in the Genome of a Wrangel Island Mammoth

A Wrangel Island mammoth genome revealed numerous deleterious genetic variants linked to behavioral and developmental defects, oligozoospermia, diabetes, and impaired scent detection. These mutations suggest that isolation and reduced population size may have contributed to adverse phenotypic consequences in the species. Researchers resurrected and functionally characterized several genes with putatively deleterious substitutions, including HYLS1 (developmental defects), NKD1 (male fertility), NEUROG3 (diabetes), and OR5A1 (scent detection). The findings provide insights into the genetic vulnerabilities of relict populations during rapid demographic decline.

Fry, E., Kim, S. K., Chigurapti, S., Mika, K. M., Ratan, A., Dammermann, A., Mitchell, B. J., Miller, W., & Lynch, V. J. (2020). Functional Architecture of Deleterious Genetic Variants in the Genome of a Wrangel Island Mammoth. Genome Biology and Evolution, 12(3), 48–58. https://doi.org/10.1093/gbe/evz279