Part C - Experimental Prediction: Comparing Autosomal And Sex-Linked Inheritance

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Part C - Experimental Prediction: Comparing Autosomal And Sex-Linked Inheritance

You now know that inheritance of eye color in fruit flies is sex-linked: The gene encoding eye color is located on the X chromosome, and there is no corresponding gene on the Y chromosome. How would the inheritance pattern differ if the gene for eye color were instead located on an autosome (a non-sex chromosome)? Recall that for autosomes, both chromosomes of a homologous pair carry the same genes in the same locations. Suppose that a geneticist crossed a large number of white-eyed females with red-eyed males. Consider two separate cases: Case 1: Eye color exhibits sex-linked inheritance. Case 2: Eye color exhibits autosomal (non-sex-linked) inheritance. (Note: In this case, assume that the red-eyed males are homozygous.)
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1 Eye color exhibits sex linked inheritance -100 Fm osp,100 red eyes + 0 white - 0 male osp 0 red eyes+ 100 white -100 female Osp 100 red eyes+ 0white -100Male osp 100 red eyes+0 white
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