Co-dominance is when two alleles are expressed and do not blend. Such as a Roan cow. When a red cow and white cow try to populate it can develop a cow with red and white spots also known as Roan
<span>The process when molecules tend to move from an area of high concentration to an area of low concentration is diffusion! I hope I helped :D</span>
Yes, crossing over does not occur during mitosis. As mitosis is simply the duplication of cells, there is no gene variation that comes from crossing-over.
