@MontereyJack,
"The number of mutations obviously varies, depending on hwat the individual experiences. Ther have been studies of individual mutation loads, and they turned out surprisingly high"
Well, ok, do you then agree about the following:
The chances (spelled right now?) for a mutation are between 0 and 1, do you agree,? And ok let make them very very very high , say, 0,999. So P(mutation)=0,999,ok?