Evolution A=always involves B=sometimes involves C=never involves Random fixation of alleles

### Sometimes involves

## Step1: Understanding the Concepts### Evolution is a process that involves changes in the genetic makeup of a population over time. This can occur through several mechanisms, including natural selection, genetic drift, gene flow, and mutation. Random fixation of alleles is one of these mechanisms.## Step2: Understanding Random Fixation of Alleles### Random fixation of alleles refers to the process where a particular allele becomes the only allele present in a population. This can happen due to chance, rather than because it confers any advantage or disadvantage.## Step3: Relating Random Fixation of Alleles to Evolution### While random fixation of alleles can occur in the context of evolution, it is not always the case. Evolution can also occur through other mechanisms, such as natural selection, where certain traits become more common because they confer a survival or reproductive advantage. Therefore, the random fixation of alleles sometimes involves evolution, but not always.