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You are studying an experimental population of Drosophila pseudoobscura flies to learn more about the evolution of resistance to insecticides. You periodically treat the flies with weak doses of the insecticide DDT as a selective agent. At the end of the experiment, you estimate the relative fitnesses of three chromosome inversions (see the table). Note - you can treat each chromosome inversion as an allele, and the combination as a genotype. Genotype--> Relative fitness --> ST/ST 0.47 ST/AR 1.0 What kind of selection is occurring in this population? heterozygote advantage directional selection for the AR allele negative frequency dependent selection directional selection for the ST allele Clear my selection AR/AR 0.62

You are studying an experimental population of Drosophila pseudoobscura flies to learn more about the evolution of resistance to insecticides. You periodically treat the flies with weak doses of the insecticide DDT as a selective agent. At the end of the experiment, you estimate the relative fitnesses of three chromosome inversions (see the table). Note - you can treat each chromosome inversion as an allele, and the combination as a genotype. Genotype--> Relative fitness --> ST/ST 0.47 ST/AR 1.0 What kind of selection is occurring in this population? heterozygote advantage directional selection for the AR allele negative frequency dependent selection directional selection for the ST allele Clear my selection AR/AR 0.62

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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In the previous question, what do you predict the outcome of natural selection will be? Assume that natural selection is the only evolutionary mechanism operating on the population. The ST and AR alleles will coexist in equilibrium in the population. The AR allele will become fixed and the ST allele will become extinct. The ST allele will become fixed and the AR allele will become extinct. I need more information to answer this question. Clear my selection 0000 DO
Transcribed Image Text:In the previous question, what do you predict the outcome of natural selection will be? Assume that natural selection is the only evolutionary mechanism operating on the population. The ST and AR alleles will coexist in equilibrium in the population. The AR allele will become fixed and the ST allele will become extinct. The ST allele will become fixed and the AR allele will become extinct. I need more information to answer this question. Clear my selection 0000 DO
You are studying an experimental population of Drosophila pseudoobscura flies to learn more about the evolution of resistance to insecticides. You periodically treat the flies with weak doses of the insecticide DDT as a selective agent. At the end of the experiment, you estimate the relative fitnesses of three chromosome inversions (see the table). Note - you can treat each chromosome inversion as an allele, and the combination as a genotype. Genotype --> Relative fitness --> ST/ST 0.47 ST/AR 1.0 What kind of selection is occurring in this population? heterozygote advantage directional selection for the AR allele negative frequency dependent selection directional selection for the ST allele Clear my selection AR/AR 0.62
Transcribed Image Text:You are studying an experimental population of Drosophila pseudoobscura flies to learn more about the evolution of resistance to insecticides. You periodically treat the flies with weak doses of the insecticide DDT as a selective agent. At the end of the experiment, you estimate the relative fitnesses of three chromosome inversions (see the table). Note - you can treat each chromosome inversion as an allele, and the combination as a genotype. Genotype --> Relative fitness --> ST/ST 0.47 ST/AR 1.0 What kind of selection is occurring in this population? heterozygote advantage directional selection for the AR allele negative frequency dependent selection directional selection for the ST allele Clear my selection AR/AR 0.62
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