Colorium is an autosomal dominant trait in nutonian flies (identical to earth fruit flies in every way). there are two alleles at this locus: f = dominant allele; flies with this allele cannot observe the color fuschia; these flies have the colorium phenotype. + = wild type allele; flies who are homozygous for this allele can observe the color fuschia; these flies do not have the colorium phenotype. a cross of a true breeding male with colorium and a true breeding female without colorium produces f1 offspring that all have the colorium phenotype. when a complementation cross is performed (with true breeding flies), we expect the following results:

All of the offspring will be with the Colorium phenotype

Explanation:

A cross of a true breeding male with Colorium and a true breeding female without Colorium is:

P: FF  x  ++

F1: F+ F+ F+ F+

After the complementation cross F+  x  FF

F2: FF FF F+F+

All of the offspring will be with the Colorium phenotype

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in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.