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Read in your textbook about positive assortative mating. In this example, from your text, positive assortative mating is 100% (i.e. there is no random mating). Note that the frequency of heterozygotes is cut in half each generation. Does this match your answers above? Look at the actual values make sure you understand why positive assortative mating leads to an increase in homozygosity. (a) Only heterozygotes produce heterozygote offspring, but only 50% of the time Homozygote parent for A, Heterozygote parent Homozygote parent for A, Eggs A, A, Eggs Eggs A2 A2 A, A2 A, A, A, A, A, A, A, A, A, A2 A2 A2 A2 A2 A2 A, A, A, A, A, A, A, A2 A2 A2 A2 A2 A2 A2 A2 (b) Effect of extreme inbreeding (self- fertilization) over time A, A, Homozygote A, A2 Heterozygote A2 A2 Homozygote The arrows represent A, p= 0.5 offspring genotypes that are produced by each parental genotype Generation 1 Az q = 0.5 100% 25% 50% 25% 100% A, p= 0.5 Az q= 0.5 Generation 2 100% 25% 50% 25% 100% The frequencies of genotypes (widths of red, gray, and blue bars) change over time .. A, p= 0.5 Az q= 0.5 Generation 3 100% 100% A, p= 0.5 Az q = 0.5 V.... of the two alleles stay Generation 4 ... but the frequencies 25 50 75 100 the same Frequency of genotypes © 2017 Pearson Education, Inc. Given your result. Did evolution occur after one generation of positive assortative mating, why or why not? What else is true? (select all that are true) O no evolution because all of the conditions for Hardy-Weinberg were operating O evolution occurred because genotype frequencies changed O no evolution occurred because there were no evolutionary forces operating O the genotype frequencies changed because of the non-random mating O evolution occurred because allele frequencies changed O because of non-random mating, the population is not in Hardy-Weinberg equilibrium O evolution occurred because the parameters included non-random mating

Read in your textbook about positive assortative mating. In this example, from your text, positive assortative mating is 100% (i.e. there is no random mating). Note that the frequency of heterozygotes is cut in half each generation. Does this match your answers above? Look at the actual values make sure you understand why positive assortative mating leads to an increase in homozygosity. (a) Only heterozygotes produce heterozygote offspring, but only 50% of the time Homozygote parent for A, Heterozygote parent Homozygote parent for A, Eggs A, A, Eggs Eggs A2 A2 A, A2 A, A, A, A, A, A, A, A, A, A2 A2 A2 A2 A2 A2 A, A, A, A, A, A, A, A2 A2 A2 A2 A2 A2 A2 A2 (b) Effect of extreme inbreeding (self- fertilization) over time A, A, Homozygote A, A2 Heterozygote A2 A2 Homozygote The arrows represent A, p= 0.5 offspring genotypes that are produced by each parental genotype Generation 1 Az q = 0.5 100% 25% 50% 25% 100% A, p= 0.5 Az q= 0.5 Generation 2 100% 25% 50% 25% 100% The frequencies of genotypes (widths of red, gray, and blue bars) change over time .. A, p= 0.5 Az q= 0.5 Generation 3 100% 100% A, p= 0.5 Az q = 0.5 V.... of the two alleles stay Generation 4 ... but the frequencies 25 50 75 100 the same Frequency of genotypes © 2017 Pearson Education, Inc. Given your result. Did evolution occur after one generation of positive assortative mating, why or why not? What else is true? (select all that are true) O no evolution because all of the conditions for Hardy-Weinberg were operating O evolution occurred because genotype frequencies changed O no evolution occurred because there were no evolutionary forces operating O the genotype frequencies changed because of the non-random mating O evolution occurred because allele frequencies changed O because of non-random mating, the population is not in Hardy-Weinberg equilibrium O evolution occurred because the parameters included non-random mating

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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Read in your textbook about positive assortative mating. In this example, from your text, positive assortative mating is 100% (i.e. there is no random mating). Note that the frequency of heterozygotes is cut in half each generation. Does this match your answers above? Look at the actual values make sure you understand why positive assortative mating leads to an increase in homozygosity. (a) Only heterozygotes produce heterozygote offspring, but only 50% of the time Homozygote parent for A, Heterozygote parent Homozygote parent for A, Eggs A, A, Eggs A2 A, Eggs A2 A2 A, A, A, A, A, A, A, A, A, A2 A2 A2 A2 A2 A2 A, A, A, A, A, A, A, A2 A2 A2 A2 A2 Az A2 A2 (b) Effect of extreme inbreeding (self- fertilization) over time A, A, Homozygote A, A2 Heterozygote A2 A2 Homozygote The arrows represent A, p= 0.5 offspring genotypes that are produced by each parental genotype Generation 1 Az q = 0.5 100% 25% 50% 25% 100% A, p= 0.5 Az q= 0.5 Generation 2 100% 25% 50% 25% 100% The frequencies of genotypes (widths of red, gray, and blue bars) change over time .. A, p= 0.5 Az q= 0.5 Generation 3 100% 100% A, p= 0.5 Az q = 0.5 V.... of the two alleles stay Generation 4 ... but the frequencies 25 50 75 100 the same Frequency of genotypes © 2017 Pearson Education, Inc. Given your result. Did evolution occur after one generation of positive assortative mating, why or why not? What else is true? (select all that are true) O no evolution because all of the conditions for Hardy-Weinberg were operating O evolution occurred because genotype frequencies changed O no evolution occurred because there were no evolutionary forces operating O the genotype frequencies changed because of the non-random mating O evolution occurred because allele frequencies changed O because of non-random mating, the population is not in Hardy-Weinberg equilibrium O evolution occurred because the parameters included non-random mating
Transcribed Image Text:Read in your textbook about positive assortative mating. In this example, from your text, positive assortative mating is 100% (i.e. there is no random mating). Note that the frequency of heterozygotes is cut in half each generation. Does this match your answers above? Look at the actual values make sure you understand why positive assortative mating leads to an increase in homozygosity. (a) Only heterozygotes produce heterozygote offspring, but only 50% of the time Homozygote parent for A, Heterozygote parent Homozygote parent for A, Eggs A, A, Eggs A2 A, Eggs A2 A2 A, A, A, A, A, A, A, A, A, A2 A2 A2 A2 A2 A2 A, A, A, A, A, A, A, A2 A2 A2 A2 A2 Az A2 A2 (b) Effect of extreme inbreeding (self- fertilization) over time A, A, Homozygote A, A2 Heterozygote A2 A2 Homozygote The arrows represent A, p= 0.5 offspring genotypes that are produced by each parental genotype Generation 1 Az q = 0.5 100% 25% 50% 25% 100% A, p= 0.5 Az q= 0.5 Generation 2 100% 25% 50% 25% 100% The frequencies of genotypes (widths of red, gray, and blue bars) change over time .. A, p= 0.5 Az q= 0.5 Generation 3 100% 100% A, p= 0.5 Az q = 0.5 V.... of the two alleles stay Generation 4 ... but the frequencies 25 50 75 100 the same Frequency of genotypes © 2017 Pearson Education, Inc. Given your result. Did evolution occur after one generation of positive assortative mating, why or why not? What else is true? (select all that are true) O no evolution because all of the conditions for Hardy-Weinberg were operating O evolution occurred because genotype frequencies changed O no evolution occurred because there were no evolutionary forces operating O the genotype frequencies changed because of the non-random mating O evolution occurred because allele frequencies changed O because of non-random mating, the population is not in Hardy-Weinberg equilibrium O evolution occurred because the parameters included non-random mating
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