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Describe how genetic drift can result in speciation....

Question

Describe how genetic drift can result in speciation.

Describe how genetic drift can result in speciation.



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Evolution connection Describe how gene flow, genetic
drift, and natural selection all can influence macroevolution.

Hello, everybody. This is Ricky. And today I'm gonna be walking you through a problem. Number 10 from chapter 52 of the camp Apology text book. Okay. And this question wants us to discuss how the distribution of a species can be affected by evolutionary history and by ecological factors. Um, one thing to note. Generally, evolutionary time is longer. Thank ecological time. Um, but there can be overlap, and I'll just give you an example of why that is true. Um, this is because sometimes ecological change cause causes evolutionary change, and we can see this with, uh, flu virus. Where on ecological change would be the presence of antibodies The human, uh, immune system that would allow for a better defense against the flu virus, which leads to its rapid mutation over time. And why the flu vaccine has to be changed every year. Based on data that Abby genealogist think, um will be the most common strain of flu for the year. I hope this video was helpful, and I'll see in the next one

Hello, everyone. I hope all is well. And today I will be helping you with the 14th problem of the chapter 18 problem set. And this question is asking which statement best describes the relationship between genetic variation and speciation. So, um, we're just gonna go through this and we're gonna compare him, and we're going to see which one is the best answer. So we have a without genetic variation. Speciation would occur more slowly. Okay, well, let's just think about it this way. So without genetic variation, so genetic variation is basically my house. So if you have my oh, sis, right, And you would get, um no. Well, genetic variation essentially is like this. So you're gonna have these and then you're gonna go through my house is too, and you're gonna end up with a wheels like that. You're gonna have awesome sperm or egg that look like this, But let's do a sexual reproduction. So it's binary fission, and they're gonna be the same exact stuff. So say this is the defining factor defining factor there at the same exact thing. So without genetic variation, nothing would change. So that's false, because it would happen at all so and then visas Without genetic variation, speciation would not be possible, which is true that it is it. Then let's just go through the rest of genetic variation influences Sim Patrick speciation. But not Allah. Patrick speciation. So, um well, that is true. But I mean, it is what it is, and then you have. But that's not what they're specifically looking for their specifically looking for. Ah, the relationship between genetic variation and speciation in general. Not very not specifics. And even in the l A. Patrick speciation, even though it is geographically defining, um, the ones who do go to the different geographic area need those need those different Aly lt's in order to have survival of fittest and to adapt correctly me of d. There is no relationship with genetic variation and any form of speciation, which is false. So I hope you found this helpful. And I hope you have a great day. Thank you.

Carrot. Herbal differences are a large part of natural selection. So natural selection is the way in which an organism population evolves. No, this has to occur in a population. You can't have just a single organism evolving, and it has to occur over a long period of time. Right? Natural selection consists of certain advantages or certain disadvantages arising in a population of organisms. Considering here we have a white moth and here we have a black moth. And for natural selection, we can have two scenarios. So in scenario A, this is a very snowy environment. So we have the white moth and we have the black moth. When these two moths survive in the environment, they're going to be eaten by certain predators around. So if it's snowy in the environment, the white moths have the advantage because they're going to blend in with the snow Better. However, the black moths are not going to blend in, and they're going to be eaten more often. Now. These this quality of being a white mouth has to be able to pass on to the next generation of moths, and now the population will eventually evolve to only be in the majority white models. However, if we talk about an industrial environment, say, with a nearby factory that releases soot into the environment now the black moth has the advantage because it can blend in with the black suit in the environment. So now the white moth is that a less advantage? And now the black moth trait of being black is going to be passed on to the next generation. These changes need to be heritable because it's going to change the population over time to either shift to become, in this case, a majority of white mobs or a majority of black bombs. And it's what keeps the population healthy, surviving, adaptive and able to live in balance with the other organisms in the environment. So this kind of explains the process of natural selection and how it helps shape an organism derivative in order to become survivable and advantageous in its own environment.

Hey, guys. So today we're going to talk about different types of speciation. This right here represents the original population, with only one species president defined by the color red. And over here we have designated that this original population goes through. Two different types can go through through the two different types of speciation, which I've called A or B speciation. Type A is also known as Sim patrick speciation, which means that it a cures in the same location without any reproductive barriers. Type B, on the other hand, is called Allah Patrick speciation, which requires some sort of reproductive barrier to a cure. Thank you.


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