Allelic

Hello, I am having trouble understanding how to use the hardy-weinberg equilibrium equation. I understand that the allelic frequencies must always add to 100% (i.e. p+q = 1) but I don't understand how to do a few questions. If AA = 0.50, Aa = 0.25 and aa = 0.25, what are p and q? ...

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Hello, I am having trouble understanding how to use the hardy-weinberg equilibrium equation. I understand that the allelic frequencies must always add to 100% (i.e. p+q = 1) but I don't understand how to do a few questions. If AA = 0.50, Aa = 0.25 and aa = 0.25, what are p and q? ...

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You've got it! ;) Another way to look at it is that the punnett square tells you what happens when you cross two particular genotypes, whereas allelic frequencies tell you how common those genotypes are in a given population.

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Thanks! :) So to clarify - are you saying that the punnett square and the allelic frequencies are completely separate things??????? So when in the Hardy-Weinberg equations, you square the p - p^2 - and the q - q^2 - I got pretty confused because it seemed pretty ...

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A punnett square only describes the statistical outcomes of crossing two individuals. Allelic frequencies describe how common certain alleles are through an entire population.

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