In Drosophila, the dominant genes for the normal wing and gray body coloration are linked and localized in one chromosome, and the recessive genes for wing embryo and black body coloration are in another homologous chromosome. We crossed two diheterozygous fruit flies with normal wings and a gray body coloration. Determine the genotype of the parents and the gametes formed without crossing chromosomes, as well as the numerical ratio of the splitting of the offspring by genotype and phenotype
1) Genotypes of parents: AaBb. 2) Gametes without crossing chromosomes: AB, ab. 3) Splitting of offspring by genotype: 1 AABB: 2 AaBb: 1 aabb. Splitting of offspring by phenotype: 3 normal wings gray body: 1 rudimentary wings black body.
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