Gilchrist would never accept spontaneous mutation as a source.

The remaining 95 percent are the result of spontaneous mutations (sporadic).

However, there are documented cases where dominant white has occurred as a spontaneous mutation.

So far the process has been provisionally explained by a spontaneous mutation.

People with achondroplasia can be born to parents that do not have the condition due to spontaneous mutation.

The mathematical models suggest that about 50% of autistic cases are caused by spontaneous mutations.

This was a type of dwarfism that resulted from a spontaneous mutation.

His work currently focuses on measuring rate of spontaneous mutation in Drosophila.

The vast majority of cases are due to spontaneous genetic mutations.

This is not a spontaneous mutation; it is actually hereditary.