Now, these two chromosomes are genetically different from one another. One of these chromosomes, let's say the purple one, came from the male, and the other one, let's say the brown one, came from the female parent. So these are genetically different, but they are homologous. And what that means is both of these chromosomes carry genes that code for the same exact trait. So what that means is let's suppose that the purple chromosome contains the gene that codes for the hair color. That means the brown one will also contain the gene that codes for the hair color.