So when crossing over actually took place, we exchanged genetic information. Notice that in this case we had uppercase V, uppercase B, and uppercase V uppercase B, okay? But when genetic recombination, when crossing over took place, we have uppercase V, uppercase B, uppercase V, and now we have a lowercase B and so that's exactly what makes this one different than this chromosome right over here. And that's exactly why we produce these two gametes. So this gamete is genetically different than this gamete. Now, if no crossing over actually took place, then these two gametes would be identical because this piece of information would never have been exchanged in the first place.