 Now I'm taking us back to our slides our our animation. I'm gonna walk us through this whole process starting with metaphase one and remember You could do this whole thing Four times we saw the four different alignments that were possible if you have three homologous pairs I forgot to tell you and I can't write on this PowerPoint But you can do the math the number of arrangements for Independent assortment the number of different ways that those chromosomes can line up is to to the N Power in this case. It's two to the third power to thirded Two squared is two to the second power Two to the three power. I don't know how to say that somebody help me. I'm sorry. I should know how to say that but two to the third power is Eight, which means there are eight possible gametes resulting just from independent assortment in metaphase to to the 23rd power It's like eight million There's eight million possible gametes from independent assortment alone during meiosis in Your gonads or a right now. I would say pat your gonads, but Maybe don't do that right now Okay, shall we continue? Your gonads are amazing We already know Homologs split in anaphase one. I don't really care about all the other things, right? Although anaphase of mitosis is as simple as saying sisters split Anaphase one of meiosis homologs split This is the moment that we say hmm we have turned from a Diploid cell into a haploid cell and you can count Centromeres here are the two at the end of telophase one you have two daughter cells that have Three chromosomes total in each one They had six chromosomes before now they have three these are haploid cells They still have sister chromatids Mmm ouch, so they have too much DNA, which is why we go through the next process, but who's gonna split now? Sisters gotta split This mitosis meiosis 2 is identical To mitosis. We're just splitting chromatids. We're spit split here. We're splitting sister chromatids. Let's watch Here come our little whatever's our centrioles and our spindle fibers We're attaching we line up on the metaphase plate just like normal, but do you see how this is like? mitosis Homologs line up independently. Well in this case, we don't have homologs in the cell anymore, right? Because they're in the the next cell they got separated poor guys in Metaphase this looks just like mitosis with half the Chromosomes metaphase two And a phase two what's gonna happen? Sisters gonna split Wait, my sister. I love you T-la phase two. We're just gonna go through the process of getting four daughter cells and you check them out You're like, oh totally They're haploid They don't have sisters. We have each chromosome. We started with we have here We have four unique gametes Do you get haploid? Gametes and look how unique they are Even this one these two right here both have big blue big blue little yellow Big blue big blue little yellow but crossing over occurred in one of them So they actually have a mix of alleles Each one of these gametes whether these are sperm or eggs each one is unique That leads us to Let's talk genetic diversity and just summarize like where does the genetic diversity come from? When we go through this process of meiosis