So let's take a look at the following pedigree. So we have generation number one that consists of these four individuals. Generation number two, that consists of these four individuals, and generation number three, that consists of these five individuals. Now, the uncolored shape basically means we're dealing with an individual that has a normal phenotype, and that individual is a non carrier. The colored shape basically means we're dealing with an individual that exhibits color blindness. They have the phenotype for color blindness, while half colored means they have the normal phenotype, but they are a carrier.