 The first example we're going to talk about is incomplete dominance. In situations where there is incomplete dominance, it's pretty logical, and it's what you'd expect. A heterozygote shows a unique phenotype. And what that means, visualize this for a second. If, for example, we were going to look at flower color, then we had a red flower that was coded for by this big R dominant allele. And we had a white flower that was coded for by little recessive alleles in this particular gene. The heterozygote would, this makes sense, would show a pink flower. Now, the key is that this really is its own phenotypic class. It really is that there is a new phenotype being expressed. And it's important to recognize that because incomplete dominance shows something totally different and independent than by next situation, which is co-dominance, where two things are kind of equally dominant. So it might be a little bit tricky to get it through your brain, the difference between these two. But my flower example, we have a true breeding white flower with a true breeding red flower, and the result is all these heterozygous pink flowers. Let's look at co-dominance and see if we can distinguish between these two.