In fruit flies, curved wings are recessive to straight wings, and ebony body is recessive to gray body. A cross was made between flies (all true-breeding) with curved wings and gray bodies to flies with straight wings and ebony bodies. The F1 offspring were then test crossed to produce an F2 generation.
bodies to produce an F2 generation.
1. Diagram the genotypes of this cross, starting with the parental generation and ending with the F2 generation.
2. What are the predicted phenotypic ratios of this F2 generation?
3. Suppose the following data were obtained for this F2 generation:
A. 114 curved wings, ebony body
B. 105 curved wings, gray body
C. 111 straight wings, gray body
D. 114 straight wings, ebony body
Conduct a chi-square analysis to determine if the experimental data are consistent with the expected outcome based on Mendel's laws.
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