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A population of bats roosts in a cave in central Tennessee. There are two distinct phenotypes related to hair growth on the bat's body. Hairy individuals are covered with thick brown fur, while bald individuals lack fur on their bodies. This trait is governed by a single gene with two alleles, Hand h. The hairy allele, H, is dominant to the bald allele, h. Researchers counted the population in one small room of the cave in 2005 and again in 2015. They also collected DNA samples for analysis to determine the genotypic ratio of the alleles for the gene in the population. Use the data in the table to analyze the possibility that selection pressure may be operating on this population. Which of the following descriptions is consistent with the data given? Number of individuals in 2005 Number of individuals in 2015 Genotype HH 358 719 Hh 50 98 hh 92 183 Totals 500 1000 Chi-square formula: -0-e) Hardy-Weinberg equations: p? +2pq + q° = p+q =1 Degrees of Freedom P 1 2 3 4. 6 7 8 0.05 3.84 5.99 7.82 9.49 11.07 12.59 14.07 15.51 0.01 6.64 9.32 11.34 13.28 15.09 16.81 18.48 20.09

A population of bats roosts in a cave in central Tennessee. There are two distinct phenotypes related to hair growth on the bat's body. Hairy individuals are covered with thick brown fur, while bald individuals lack fur on their bodies. This trait is governed by a single gene with two alleles, Hand h. The hairy allele, H, is dominant to the bald allele, h. Researchers counted the population in one small room of the cave in 2005 and again in 2015. They also collected DNA samples for analysis to determine the genotypic ratio of the alleles for the gene in the population. Use the data in the table to analyze the possibility that selection pressure may be operating on this population. Which of the following descriptions is consistent with the data given? Number of individuals in 2005 Number of individuals in 2015 Genotype HH 358 719 Hh 50 98 hh 92 183 Totals 500 1000 Chi-square formula: -0-e) Hardy-Weinberg equations: p? +2pq + q° = p+q =1 Degrees of Freedom P 1 2 3 4. 6 7 8 0.05 3.84 5.99 7.82 9.49 11.07 12.59 14.07 15.51 0.01 6.64 9.32 11.34 13.28 15.09 16.81 18.48 20.09

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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A population of bats roosts in a cave in central Tennessee. There are two distinct phenotypes related to hair growth on the bat's body. Hairy individuals are covered with thick brown fur, while bald individuals lack fur on their bodies. This trait is governed by a single gene with two alleles, Hand h. The hairy allele, H, is dominant to the bald allele, h. Researchers counted the population in one small room of the cave in 2005 and again in 2015. They also collected DNA samples for analysis to determine the genotypic ratio of the alleles for the gene in the population. Use the data in the table to analyze the possibility that selection pressure may be operating on this population. Which of the following descriptions is consistent with the data given? Number of individuals in 2005 Number of individuals in 2015 Genotype HH 358 719 Hh 50 98 hh 92 183 Totals 500 1000 (0-e)? Chi-square formula: = E e Hardy-Weinberg equations: p +2pq +q° =1 p+q = 1 Degrees of Freedom 1 2 3 6 0.05 3.84 5.99 7.82 9.49 11.07 12.59 14.07 15.51 0.01 6.64 9.32 11.34 13.28 15.09 16.81 18.48 20.09
Transcribed Image Text:A population of bats roosts in a cave in central Tennessee. There are two distinct phenotypes related to hair growth on the bat's body. Hairy individuals are covered with thick brown fur, while bald individuals lack fur on their bodies. This trait is governed by a single gene with two alleles, Hand h. The hairy allele, H, is dominant to the bald allele, h. Researchers counted the population in one small room of the cave in 2005 and again in 2015. They also collected DNA samples for analysis to determine the genotypic ratio of the alleles for the gene in the population. Use the data in the table to analyze the possibility that selection pressure may be operating on this population. Which of the following descriptions is consistent with the data given? Number of individuals in 2005 Number of individuals in 2015 Genotype HH 358 719 Hh 50 98 hh 92 183 Totals 500 1000 (0-e)? Chi-square formula: = E e Hardy-Weinberg equations: p +2pq +q° =1 p+q = 1 Degrees of Freedom 1 2 3 6 0.05 3.84 5.99 7.82 9.49 11.07 12.59 14.07 15.51 0.01 6.64 9.32 11.34 13.28 15.09 16.81 18.48 20.09
A. The population is not in Hardy-Weinberg equilibrium, and it changed in a way that suggests selection against the bald trait as the population grew. B. The population is in Hardy-Weinberg equilibrium, but it is at risk of genetic drift because of its small size and the frequencies of the Hand h alleles. O C. The population is in Hardy-Weinberg equilibrium, but it is at risk of change due to selection against the bald trait because its genotypic ratio is skewed. O D. The population is not in Hardy-Weinberg equilibrium, and as the population grew, the genotypic ratio remained skewed in a way that suggests genetic drift. PREVIOUS
Transcribed Image Text:A. The population is not in Hardy-Weinberg equilibrium, and it changed in a way that suggests selection against the bald trait as the population grew. B. The population is in Hardy-Weinberg equilibrium, but it is at risk of genetic drift because of its small size and the frequencies of the Hand h alleles. O C. The population is in Hardy-Weinberg equilibrium, but it is at risk of change due to selection against the bald trait because its genotypic ratio is skewed. O D. The population is not in Hardy-Weinberg equilibrium, and as the population grew, the genotypic ratio remained skewed in a way that suggests genetic drift. PREVIOUS
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