And what the Ponnet square allows us to do is it allows us to basically uncover the type of genes that will be found within that given individual. Now, before we actually examine what the Ponnet square is and how we can use it and what information it provides us with, let's actually discuss four important terms that we must know whenever dealing with pundit squares. So we have something called heterozygous and something called homozygous. We also have something called a genotype and something called a phenotype. Now, before we look at these terms, let's actually recall the following fact. In any diploid organism, if we examine a somatic cell of a diploid organism, we'll see that for every chromosome in that somatic cell, there is always a homologous chromosome.