gene mutation,
chromosomal abberations
i] spontaneous mutation ii] induced mutation iii] germinal mutation iv] somatic mutation v] chromosomal mutation vi] gene mutation are the some of the major types of mutation......
nonsense mutation, missense mutation, frameshift muation, deletion or addition mutation
From another angle: beneficial and detrimental.
An insertion/deletion event.
insertion and deletion
Frameshift mutations and Point mutations. The difference between the two are that point mutations occur at a single point in the DNA sequence and frameshift mutations shift the "reading frame" of the genetic message.
a major event is something very big that has happened
Frameshift
I think that Hitler's major event was the killing of the Jews.
A major event is that man walked on the moon. Another major event is that President Kennedy was shot. Another major event was the bombing of Pearl harbor.
genes
A major event in 500-1800 is the rise of japan.