Why Is Only "Micro Evolution" Acceptable?

[hitch1978]

Just to get some clarification.

So a species has within it's species genepool/DNApool (I don't know which one 'works' so I will refer to it/them as a species' 'pool' from here on in.) the range a,b,c,d,e,f and g. But the predominant features within the species are all in the d range.

Something happens that makes the e range predominant. But the overall range does not shift. Correct?

Is there also the assumptiun that h can ever develope as part of the pool? Or z? (as a wraparound gene straight.)

I have struggled with a suitable analogy, and my wording. Sorry.

I think that if you accept micro but not macro, you have to agree with my points above. Does that sound right?