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Grey body, normal bristle, and straight antennae are wild type in fruit flies. Black body, stubble...

Grey body, normal bristle, and straight antennae are wild type in fruit flies. Black body, stubble bristle, and twisted antennae are the corresponding mutant traits for the first isolated mutation in each of the three genes. Grey body, normal bristle, and twisted antennae are dominant. A homozygous dominant female for all three characters is crossed with a recessive male for all three characters to produce an F1 generation that is heterozygous for all three genes. An F1 male is then back-crossed with a homozygous recessive female with the resulting F2 offspring as depicted in the table below. Correctly give names to each of the three genes and draw the chromosomal arrangement of the relevant genes and include relative distances between linked genes (include the applicable units). Phenotype # of offspring F1 chromosome grey body, stubble bristle, straight antennae 3 grey body, normal bristle, straight antennae 42 black body, stubble bristle, straight antennae 335 black body, stubble bristle, twisted antennae 36 grey body, stubble bristle, twisted antennae 20 black body, normal bristle, twisted antennae 3 grey body, normal bristle, twisted antennae 343 black body, normal bristle, straight antennae 18

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