Wikipedia article on this: https://en.wikipedia.org/wiki/Toba_catastrophe_theory#Genetic_bottleneck_theory https://en.wikipedia.org/wiki/Toba_catastrophe_theory

Wikipedia article on this: https://en.wikipedia.org/wiki/Toba_catastrophe_theory#Genetic_bottleneck_theory https://en.wikipedia.org/wiki/Toba_catastrophe_theory#Geneti... The Toba supereruption does correlate with a population decline, but evidence beyond that isn't very conclusive.