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Suppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation quiver, qu, and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding quiver is linked to the recessive gene for vestigial wings, vg. She crosses a fly homozygous fo quiver and vestigial traits with a fly homozygous for the wild-type traits, and then uses the resulting F1 females in a testcross. She obtains the flies from this testcross. Phenotype Number of flies vg* qu* 230 vg qu 224 vg qu+ vg* qu 97 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 one decimal place. X2 = Does the X2 value support the hypothesis that the quiver and vestigial genes assort independently? Why or why not? Use the partial table of critical values for X2 calculations to test this hypothesis. lanondent assortment.

Suppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation quiver, qu, and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding quiver is linked to the recessive gene for vestigial wings, vg. She crosses a fly homozygous fo quiver and vestigial traits with a fly homozygous for the wild-type traits, and then uses the resulting F1 females in a testcross. She obtains the flies from this testcross. Phenotype Number of flies vg* qu* 230 vg qu 224 vg qu+ vg* qu 97 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 one decimal place. X2 = Does the X2 value support the hypothesis that the quiver and vestigial genes assort independently? Why or why not? Use the partial table of critical values for X2 calculations to test this hypothesis. lanondent assortment.

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
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Suppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation quiver, qu, and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding quiver is linked to the recessive gene for vestigial wings, vg. She crosses a fly homozygous for quiver and vestigial traits with a fly homozygous for the wild-type traits, and then uses the resulting F1 females in a testcross. She obtains the flies from this testcross. Phenotype Number of flies vg+ qu+ 230 vg qu 224 vg qu+ 97 vg* qu 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 to one decimal place. X2 Does the X2 value support the hypothesis that the quiver and vestigial genes assort independently? Why the partial table of critical values for X2 calculations to test this hypothesis. or why not? Use O No, the X' value indicates that there are too many phenotypes for independent assortment.
Transcribed Image Text:Suppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation quiver, qu, and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding quiver is linked to the recessive gene for vestigial wings, vg. She crosses a fly homozygous for quiver and vestigial traits with a fly homozygous for the wild-type traits, and then uses the resulting F1 females in a testcross. She obtains the flies from this testcross. Phenotype Number of flies vg+ qu+ 230 vg qu 224 vg qu+ 97 vg* qu 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 to one decimal place. X2 Does the X2 value support the hypothesis that the quiver and vestigial genes assort independently? Why the partial table of critical values for X2 calculations to test this hypothesis. or why not? Use O No, the X' value indicates that there are too many phenotypes for independent assortment.
vg+ qu+ 230 vg qu 224 vg qu+ 97 vg* qu 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 to one decimal place. X2 Does the X value support the hypothesis that the quiver and vestigial genes assort independently? Why or why not? Use the partial table of critical values for X2 calculations to test this hypothesis. No, the X2 value indicates that there are too many phenotypes for independent assortment. Yes, the X2 value indicates that the observed and expected number of progeny are equal in number. O No, the X² value indicates that the observed progeny are significantly different from what would be expected with independent assortment of the two genes. Yes, the X2 value indicates that the genes vestigial and quiver assort independently.
Transcribed Image Text:vg+ qu+ 230 vg qu 224 vg qu+ 97 vg* qu 99 Test the hypothesis that the genes quiver and vestigial assort independently by calculating the chi-squared, X², for this hypothesis. Provide the X2 to one decimal place. X2 Does the X value support the hypothesis that the quiver and vestigial genes assort independently? Why or why not? Use the partial table of critical values for X2 calculations to test this hypothesis. No, the X2 value indicates that there are too many phenotypes for independent assortment. Yes, the X2 value indicates that the observed and expected number of progeny are equal in number. O No, the X² value indicates that the observed progeny are significantly different from what would be expected with independent assortment of the two genes. Yes, the X2 value indicates that the genes vestigial and quiver assort independently.
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The mutation quiver, qu, is due to an autosomal recessive gene. The test cross if performed between fly homozygous for quiver and vestigial traits and a fly homozygous for wild type traits to determine whether the genes for quiver and vestigial wings are linked.

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