Or another way to thinkĪbout it is, 42 percent of this population is going to have the genotype upper caseī and lower case b. To be two times 0.21, so this right over here Two times p times q, that's going to be two times 0.7, times 0.3. Going to have a genotype of capital B, they're going We're now able to say that 49 percent of the population is It is, based on this, and once again, it's a simple equation, but these really neat ideas are starting to pop out of it based So this right over here isĠ.7 squared, which is 0.49. So what is p squared? P squared is going to be 70 So just based on that, we can kind of dig a little bit deeper here.
#Hardy weinberg equation calculator plus
P plus q equals 100 percent, or p plus q is equal to one.
#Hardy weinberg equation calculator code
The rest of the genes must code for the dominant one, because we're assuming there's only two of them. Based on that, we can figure out what percentage code for Genes in the population, 30 percent express our code for the recessive allele, or Percentage, 0.3 or 30 percent, if you were looking at the Just like that, we were able to figure out the allele frequency of It as a decimal, 0.09, that means that q is going to be the square root of 0.09, Nine percent has this genotype, that's what this tells us right over here. Or another way to think about it, this term over here is Now you could view this as the probability of getting One way to think about it, of getting, q of course is the frequency of the recessive allele, But we've already seen, that's exactly what this term right over here is. Or you can say that theįrequency in the population of this genotype is nine percent. Because if you have a capital B in here then you're going to have brown eyes. Percent has blue eyes, what does that mean? Well the only way to have blue eyes is if your genotype is If you were to randomly pick a gene, that it's Just comes from the idea that p plus q is going to be equal to one. It says, the allele frequency for the dominant allele frequency squared, plus two times theĭominant allele frequency times the recessive allele frequency, plus the recessiveĪllele frequency squared, is equal to one. We've worked it out in a previous video, but I'll rewrite it right now. Out, given this information? Well let's revisit the The Hardy-Weinberg Equation, can we figure these things We figure that out as well? I would encourage you to pause this video and based on what we saw of Which is the frequency of the recessive allele, can
Can we figure this out? And can we figure out q, Based on this, can we figure out p, which is the frequency So now we're talking about the phenotype.
Observe that nine percent of this population has blue eyes. Now let's say that in a population, it's a large population, one that meets all the Hardy-WeinbergĮquilibrium assumptions, let's say that you were to
So if either one of yourĪlleles is this capital B, you're going to have brown eyes, the only way to have blueĮyes is to have a lower case, is to be homozygous for It has the dominant variant, which codes for brown eye color, and it has the recessive variant, which codes for blue eye color. This idea, the simplification, that there's a gene for eye color, and it only comes with two variants.
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