In what sense is the Hardy–Weinberg principle a null hypothesis?

Video transcript

Hello everyone. Let's look at the next question. Which one of the following factors can disturb the Heidi hardy Weinberg law. Well, let's recall from our condom videos. The hardy Weinberg Law says that the frequency of al eels and gina types in a population will remain constant from generation to generation in the absence of other evolutionary factors. So that means no natural selection um favoring one alley or the other or something like that. So let's look at our answer choices noting that choice D. Is all of these. There's the potential that all are correct and see which ones would disturb the hardy Weinberg law. Choice A. Says gene flow. Well gene flow would disturb this because gene flow will bring in new alleles so they will not remain constant from generation to generation if you have gene flow coming jeans coming in from another population. So this would say in slow outside how else? So that would definitely disturb the equilibrium. But I'm just putting a dot not selecting it. Since we have that all of these options. Choice B says mutation. Well mutation is going to change a leo's introduce new ones. So yes that would be an outside evolutionary factor that will disturb the Heidi hardy Weinberg law because it would disturb that constant distribution of alleles and gina types I see is natural selection. Natural selection also will disturb the hardy Weinberg law. Since that will favor some alleles over others. So that frequency of alleles and gina types will not remain constant because organisms with some alleles will be more likely to reproduce than others. So our answer here is Choice D. All of these which of the following factors can disturb the hardy Weinberg law, gene flow, mutation and natural selection, Choice D. All of them. We'll do that. See you in the next video.