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I've already started with the eye color example so I figure no harm in continuing it let's say we live on a planet or rare species where there's only two possible I colors either blue blue and the the genotype or the allele for blue well i'll abbreviate with a lowercase B or you could have brown eyes brown eyes I'm doing it in the salmon color just because I got tired of the brown will do it uppercase B and I'll make a few other simplifying assumptions first of all let's assume that this is a kind of a simple the expression of this gene is very simple that Brown is dominant to blue so if you have one of each you're going to see brown eyes the only way you're going to see blue eyes is if you have a blue allele from each of your parent and then the other assumptions I'm going to make is that this population is essentially has a stable gene pool for this what with respect to the eye color gene what do I mean by that no selection no selection is taking place no natural selection so based on this trait so for example you're not more or less likely to be able to reproduce or the number of children you have is not going to be a larger greater dependent on what your eye color is in this population and I'm also going to assume that there's no mutations no mutations so for whatever reason a blue a chromosome that has a blue allele can't randomly turn to a brown or vice versa or turn into a third color and I'm also going to zoom i'm going to have a large population large population and the reason why i'm making all of these assumptions is because i essentially want to have a stable gene pool at least relative relative to this gene relative to add the eye color gene i want to be stable i want to have a stable allele frequency what do I mean by allele frequency allele frequency I mean that like I said large population but let's take a very small population let's say that there's two two people in the population and you know one one guy right here is I'll just do it in a neutral let's say he's he his genotype is Big B and lowercase B and let's say that the other guy has blue eyes so he has to be homozygous recessive let's say this is the entire population of course a population of two can't apply to what I'm about to do but I just want to explain allele frequency the allele frequency here of the blue eyes the blue-eyed allele frequency here is what well in this population I have exactly four alleles I only have two individuals but they each have two alleles so if so it's going to be seventy-five percent seventy-five percent of the alleles in this population are blue right there's one two three four alleles and three of them are blue the frequency of the brown allele the brown allele is twenty-five percent and this is different than the actual expression if I ask you the frequency of brown eyes vs blue eyes so this is allele frequency let me write that down that's allele frequency right there if I were to ask you fino phenotype frequency so let me do it...