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Ch. 24 - Speciation
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All textbooksFreeman 8th EditionCh. 24 - SpeciationProblem 6

Chapter 23, Problem 6

Sexual selection favors individuals with traits that increase their ability to obtain mates, such as mating calls in crickets. Using this example, propose a scenario where sexual selection could contribute to divergence in sympatric speciation.

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Hello everyone and welcome to today's video. So today we have that. Which of the following factors has the potential to influence in Patrick speciation. Patrick speciation occurs when evolution or to speciation occurs without a geographical barrier. Now let's look over answer choices to see what type of processes can influence in Patrick speciation or speciation within a population beginning by answer choice. A sexual selection which is a type of natural selection. And this occurs when mates are selected based on traits. Now if mates are selected based on certain traits on just when a type of natural selection takes place, evolution is going to take place as we have certain traits being preferred over others. If evolution takes place then speciation is going to follow because new species can be formed. So it is actually a correct answer choice and we will not cancel it out. Then we have competition and actually resource availability. These two go hand in hand. If we have a very low resource availability then competition is going to occur. So now certain traits that improve competition in these organisms are going to be favored just like in sexual selection. When certain traits are favored, selection is going to occur or evolution is going to occur. And when evolution occurs, speciation follows as new species can be created from these traits. So all of these answer choices are going to be correct. And we will highlight answer choice. D all of the above as the final answer to our question. I really hope this video helped you and I hope to see you on the next one
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