So if we take a look at the following diagram, if this is, let's say, chromosome number one, and this is its homologous chromosome, what that means is this will contain a gene in this locus that will code for height. And this homologous chromosome will also contain a similar gene that will also code for a protein that will help us express our height. And these two genes, with respect to one another, these two homologous genes are known as alleles or alleles. So basically, such a pair of genes, such a pair of genes found on homologous chromosomes that code for polypeptides, that express the same physical trait. In this case, it's the height. In this case, it's the seed color, the pod color, the seed shape and so forth.