Unexpected excess heterozygosity in a threatened, mycoheterotrophic, self-pollinating orchid
Craig F. Barrett, Nicole M. Fama, John V. Freudenstein, Gerardo A. Salazar, Sandra Simon, Brandon T. Sinn
The paper investigates excess heterozygosity in the self-pollinating orchid Corallorhiza bentleyi, finding overdominance likely explains the phenomenon despite selfing and small population size.
bioRxiv · Oct 9, 2026 · PreprintEvolutionary Biology