statistics questions

[James Birmingham]

> >Also is the best genome and the genomes that are kept unchanged in a
> >generation, re-evaluated in every generation.
> 
> any genome that is not modified will not be re-evaluated; evaluation 
> takes place only if a change was made to the genome.  if you copy a 
> genome that has been evaluated, then the copy will not be evaluated 
> until it is modified.

Does this mean that only the offspring in a new generation are evaluated?
If so is there a method in the library, of having every genome in the
population being evaluated every generation.