Biological consequences of the Tunguska event include…
1999 CE
Biological consequences of the Tunguska event include an increase in the rate of biological mutations, not only within the epicenter but along the trajectory of the object over Tunguska.
russian researchers find abnormalities in the Rh blood factor of local Evenk groups, and are currently studying genetic variation in certain local ant species.
Moreover, researchers discover genetic abnormalities in the seeds and needle clusters of at least one species of pine.
(Source : "The Sky Has Split Apart!" The Cosmic Mystery of the Century, by Professor Roy A. Gallant; Southworth Planetarium; University of Southern Maine