From what was explained to me, that pool of mutations is like a memory bank. I those genes there are 25 mutations, either color or stat however only 20 will appear in that offspring. You can have hundreds of mutations in a gene pool but only 20 from either parent will actually show up and it's all based on random chance what gets picked from that gene pool. Your best bet would be to figure out what those mutations are and trace them through the bloodline to maybe get a chance at figuring out which ones you've got visible or active