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  3. in drosophila melanogaster, the black body (b*) is

In Drosophila melanogaster, the black body (b*) is recessive to the gray body (b*), purple...

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Biology

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In Drosophila melanogaster, the black body (b*) is recessive to the gray body (b*), purple eyes (pr) are recessive to red eyes (pr*), and vestigial wings (vg) are recessive to normal wings (vg*). The loci encoding these traits are linked, with the map distances shown in the image.The interference among these genes is 0.5. A fly with a black body, purple eyes, and vestigial wings is crossed with a fly homozygous for a gray body, red eyes, and normal wings. The female progeny are then crossed with males that have a blackbody, purple eyes, and vestigial wings.If a total of 1000 progeny are examined, determine the expected number of offspring that result from each crossover event.double crossover:single crossover between b and pr:single crossover between vg and pr:

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