In Drosophila melanogaster, cinnabar eye (cn) and vestigial wing (vg) are simple recessive traits. A pure breeding cinnabar fly is crossed with a pure breeding vestigial wing fly and have offspring that are all wild type. If the genes are closely linked and no crossing over is found to occur, then what would the F2 offspring phenotypes be when testcrossed?

Human Heredity: Principles and Issues (MindTap Course List)
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ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter15: Genomes And Genomics
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Problem 2QP: Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To...
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In Drosophila melanogaster, cinnabar eye (cn) and vestigial wing (vg) are simple recessive traits. A pure breeding cinnabar fly is
crossed with a pure breeding vestigial wing fly and have offspring that are all wild type. If the genes are closely linked and no
crossing over is found to occur, then what would the F2 offspring phenotypes be when testcrossed?
O 1/2 wild type and 1/2 double mutant
1/2 cinnabar and 1/2 vesitigial wing
O all wild type
O 1/4 wild type, 1/4 cinnabar, 1/4 vestigial and 1/4 double mutant
Transcribed Image Text:In Drosophila melanogaster, cinnabar eye (cn) and vestigial wing (vg) are simple recessive traits. A pure breeding cinnabar fly is crossed with a pure breeding vestigial wing fly and have offspring that are all wild type. If the genes are closely linked and no crossing over is found to occur, then what would the F2 offspring phenotypes be when testcrossed? O 1/2 wild type and 1/2 double mutant 1/2 cinnabar and 1/2 vesitigial wing O all wild type O 1/4 wild type, 1/4 cinnabar, 1/4 vestigial and 1/4 double mutant
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