differing types of mutations (represented by otherwise colored arrows) take place at distinct frequencies (represented by arrow thickness). variety acts for a sieve and allows only a subset of those mutations to persist https://elainerbfr244010.blog-kids.com/29944580/the-greatest-guide-to-44-of-the-world-s-population-has-at-least-the-first-of-5-gene-mutations-and-every-gene-mutation-works-against-you